FIX: Remove an excessive analytics invocation (IXSB-1378) (#2155)

Author: K-Tone

Packages/com.unity.inputsystem/CHANGELOG.md

@@ -10,6 +10,8 @@ however, it has to be formatted properly to pass verification tests.
 
 ## [Unreleased] - yyyy-mm-dd
 
+### Fixed
+- Fixed an analytics event being invoked twice when the Save button in the Actions view was pressed. [ISXB-1378](https://issuetracker.unity3d.com/product/unity/issues/guid/ISXB-1378)
 - Fixed an issue causing a number of errors to be displayed when using `InputTestFixture` in playmode tests with domain reloading disabled on playmode entry. [ISXB-1446](https://issuetracker.unity3d.com/product/unity/issues/guid/ISXB-1446)
 - Fixed issue where user was not prompted to save changes when loading a second input actions asset into an already opened editor. [ISXB-1343](https://issuetracker.unity3d.com/product/unity/issues/guid/ISXB-1343)
 

Packages/com.unity.inputsystem/InputSystem/Editor/UITKAssetEditor/Commands/Commands.cs

@@ -596,7 +596,6 @@ public static Command SaveAsset(Action postSaveAction)
                 // TODO It makes more sense to call back to editor since editor owns target object?
                 //InputActionAssetManager.SaveAsset(state.serializedObject.targetObject as InputActionAsset);
                 postSaveAction?.Invoke();
-                state.m_Analytics?.RegisterExplicitSave();
                 return state;
             };
         }