Update Parse SDK source and remove connectivity_plus plugin

Switched parse_server_sdk dependency to use a specific git repository and branch in pubspec.yaml files. Commented out parse_offline_extension and removed connectivity_plus plugin registration from Windows build files.

Author: pastordee

packages/flutter/example/pubspec.yaml

@@ -12,8 +12,13 @@ dependencies:
   flutter:
     sdk: flutter
 
-  parse_offline_extension: ^1.0.0
+  # parse_offline_extension: ^1.0.0
   parse_server_sdk: 9.0.0
+  # parse_server_sdk:
+  #   git:
+  #     url: https://github.com/pastordee/Parse-SDK-Flutter.git 
+  #     path: packages/dart
+  #     ref: pc_server 
 
   cupertino_icons: ^1.0.5
   path: ^1.8.2

packages/flutter/example/windows/flutter/generated_plugin_registrant.cc

@@ -6,9 +6,6 @@
 
 #include "generated_plugin_registrant.h"
 
-#include <connectivity_plus/connectivity_plus_windows_plugin.h>
 
 void RegisterPlugins(flutter::PluginRegistry* registry) {
-  ConnectivityPlusWindowsPluginRegisterWithRegistrar(
-      registry->GetRegistrarForPlugin("ConnectivityPlusWindowsPlugin"));
 }

packages/flutter/example/windows/flutter/generated_plugins.cmake

@@ -3,7 +3,6 @@
 #
 
 list(APPEND FLUTTER_PLUGIN_LIST
-  connectivity_plus
 )
 
 list(APPEND FLUTTER_FFI_PLUGIN_LIST

packages/flutter/pubspec.yaml

@@ -27,14 +27,14 @@ dependencies:
     sdk: flutter
 
 
-  parse_offline_extension: ^1.0.0
-  parse_server_sdk: 9.0.0
+  # parse_offline_extension: ^1.0.0
+  # parse_server_sdk: 9.0.0
 
-  # parse_server_sdk:
-  #   git:
-  #     url: https://github.com/pastordee/Parse-SDK-Flutter.git 
-  #     path: packages/dart
-  #     ref: pc_server 
+  parse_server_sdk:
+    git:
+      url: https://github.com/pastordee/Parse-SDK-Flutter.git 
+      path: packages/dart
+      ref: pc_server 
 
   # For local development, uncomment below and comment above
   # parse_server_sdk: