chore: remove payment gateway libraries

pyproject.toml

@@ -75,16 +75,12 @@ dependencies = [
 
     # integration dependencies
     "boto3~=1.17.53",
-    "braintree~=4.8.0",
     "dropbox~=11.7.0",
     "google-api-python-client~=2.2.0",
     "google-auth-httplib2~=0.1.0",
     "google-auth-oauthlib~=0.4.4",
     "google-auth~=1.29.0",
     "googlemaps~=4.4.5",
-    "paytmchecksum~=1.7.0",
-    "razorpay~=1.2.0",
-    "stripe~=2.56.0",
 ]
 
 [build-system]