Style: Remove inconsistently used @author docstrings

Each file in Godot has had multiple contributors who co-authored it over the
years, and the information of who was the original person to create that file
is not very relevant, especially when used so inconsistently.

`git blame` is a much better way to know who initially authored or later
modified a given chunk of code, and most IDEs now have good integration to
show this information.

platform/android/java/lib/src/org/godotengine/godot/utils/PermissionsUtil.java

@@ -45,8 +45,8 @@ import java.util.List;
 
 /**
  * This class includes utility functions for Android permissions related operations.
- * @author Cagdas Caglak <cagdascaglak@gmail.com>
  */
+
 public final class PermissionsUtil {
 	private static final String TAG = PermissionsUtil.class.getSimpleName();