diff --git a/frappe/core/doctype/system_settings/system_settings.json b/frappe/core/doctype/system_settings/system_settings.json
index 13dbc32620..0b1abbab06 100644
--- a/frappe/core/doctype/system_settings/system_settings.json
+++ b/frappe/core/doctype/system_settings/system_settings.json
@@ -67,8 +67,7 @@
   "enable_prepared_report_auto_deletion",
   "prepared_report_expiry_period",
   "chat",
-  "enable_chat",
-  "use_socketio_to_upload_file"
+  "enable_chat"
  ],
  "fields": [
   {
@@ -394,12 +393,6 @@
    "fieldtype": "Check",
    "label": "Enable Chat"
   },
-  {
-   "default": "1",
-   "fieldname": "use_socketio_to_upload_file",
-   "fieldtype": "Check",
-   "label": "Use socketio to upload file"
-  },
   {
    "fieldname": "column_break_21",
    "fieldtype": "Column Break"
@@ -486,7 +479,7 @@
  "icon": "fa fa-cog",
  "issingle": 1,
  "links": [],
- "modified": "2020-12-30 18:52:22.161391",
+ "modified": "2021-03-25 13:58:12.750629",
  "modified_by": "Administrator",
  "module": "Core",
  "name": "System Settings",
@@ -504,4 +497,4 @@
  "sort_field": "modified",
  "sort_order": "ASC",
  "track_changes": 1
-}
+}
\ No newline at end of file
diff --git a/frappe/public/js/frappe/socketio_client.js b/frappe/public/js/frappe/socketio_client.js
index e274ef952f..c9c98bd937 100644
--- a/frappe/public/js/frappe/socketio_client.js
+++ b/frappe/public/js/frappe/socketio_client.js
@@ -54,7 +54,6 @@ frappe.socketio = {
 
 		frappe.socketio.setup_listeners();
 		frappe.socketio.setup_reconnect();
-		frappe.socketio.uploader = new frappe.socketio.SocketIOUploader();
 
 		$(document).on('form-load form-rename', function(e, frm) {
 			if (frm.is_new()) {
@@ -257,114 +256,3 @@ frappe.realtime.publish = function(event, message) {
 	}
 }
 
-frappe.socketio.SocketIOUploader = class SocketIOUploader {
-	constructor() {
-		frappe.socketio.socket.on('upload-request-slice', (data) => {
-			var place = data.currentSlice * this.chunk_size,
-				slice = this.file.slice(place,
-					place + Math.min(this.chunk_size, this.file.size - place));
-
-			if (this.on_progress) {
-				// update progress
-				this.on_progress(place / this.file.size * 100);
-			}
-
-			this.reader.readAsArrayBuffer(slice);
-			this.started = true;
-			this.keep_alive();
-		});
-
-		frappe.socketio.socket.on('upload-end', (data) => {
-			this.reader = null;
-			this.file = null;
-			if (data.file_url.substr(0, 7)==='/public') {
-				data.file_url = data.file_url.substr(7);
-			}
-			this.callback(data);
-		});
-
-		frappe.socketio.socket.on('upload-error', (data) => {
-			this.disconnect(false);
-			frappe.msgprint({
-				title: __('Upload Failed'),
-				message: data.error,
-				indicator: 'red'
-			});
-		});
-
-		frappe.socketio.socket.on('disconnect', () => {
-			this.disconnect();
-		});
-	}
-
-	start({file=null, is_private=0, filename='', callback=null, on_progress=null,
-		chunk_size=24576, fallback=null} = {}) {
-
-		if (this.reader) {
-			frappe.throw(__('File Upload in Progress. Please try again in a few moments.'));
-		}
-
-		function fallback_required() {
-			return !frappe.socketio.socket.connected
-				|| !( !frappe.boot.sysdefaults || frappe.boot.sysdefaults.use_socketio_to_upload_file );
-		}
-
-		if (fallback_required()) {
-			return fallback ? fallback() : frappe.throw(__('Socketio is not connected. Cannot upload'));
-		}
-
-		this.reader = new FileReader();
-		this.file = file;
-		this.chunk_size = chunk_size;
-		this.callback = callback;
-		this.on_progress = on_progress;
-		this.fallback = fallback;
-		this.started = false;
-
-		this.reader.onload = () => {
-			frappe.socketio.socket.emit('upload-accept-slice', {
-				is_private: is_private,
-				name: filename,
-				type: this.file.type,
-				size: this.file.size,
-				data: this.reader.result
-			});
-			this.keep_alive();
-		};
-
-		var slice = file.slice(0, this.chunk_size);
-		this.reader.readAsArrayBuffer(slice);
-	}
-
-	keep_alive() {
-		if (this.next_check) {
-			clearTimeout (this.next_check);
-		}
-		this.next_check = setTimeout (() => {
-			if (!this.started) {
-				// upload never started, so try fallback
-				if (this.fallback) {
-					this.fallback();
-				} else {
-					this.disconnect();
-				}
-			}
-			this.disconnect();
-		}, 3000);
-	}
-
-	disconnect(with_message = true) {
-		if (this.reader) {
-			this.reader = null;
-			this.file = null;
-			frappe.hide_progress();
-			if (with_message) {
-				frappe.msgprint({
-					title: __('File Upload'),
-					message: __('File Upload Disconnected. Please try again.'),
-					indicator: 'red'
-				});
-			}
-		}
-	}
-}
diff --git a/socketio.js b/socketio.js
index 136787858a..796b8aa94d 100644
--- a/socketio.js
+++ b/socketio.js
@@ -216,47 +216,6 @@ io.on('connection', function (socket) {
 			'type'
 		);
 	});
-
-	socket.on('upload-accept-slice', (data) => {
-		try {
-			if (!socket.files[data.name]) {
-				socket.files[data.name] = Object.assign({}, files_struct, data);
-				socket.files[data.name].data = [];
-			}
-
-			//convert the ArrayBuffer to Buffer
-			data.data = new Buffer(new Uint8Array(data.data));
-			//save the data
-			socket.files[data.name].data.push(data.data);
-			socket.files[data.name].slice++;
-
-			if (socket.files[data.name].slice * 24576 >= socket.files[data.name].size) {
-				// do something with the data
-				var fileBuffer = Buffer.concat(socket.files[data.name].data);
-
-				const file_url = path.join((socket.files[data.name].is_private ? 'private' : 'public'),
-					'files', data.name);
-				const file_path = path.join('sites', get_site_name(socket), file_url);
-
-				fs.writeFile(file_path, fileBuffer, (err) => {
-					delete socket.files[data.name];
-					if (err) return socket.emit('upload error');
-					socket.emit('upload-end', {
-						file_url: '/' + file_url
-					});
-				});
-			} else {
-				socket.emit('upload-request-slice', {
-					currentSlice: socket.files[data.name].slice
-				});
-			}
-		} catch (e) {
-			log(e);
-			socket.emit('upload-error', {
-				error: e.message
-			});
-		}
-	});
 });
 
 subscriber.on("message", function (_channel, message) {