Remove amirh from CODEOWNERS (#3484)

Author: amirh

CODEOWNERS

@@ -6,7 +6,7 @@
 
 packages/android_alarm_manager/**              @bkonyi
 packages/android_intent/**                     @mklim @matthew-carroll
-packages/battery/**                            @amirh @matthew-carroll
+packages/battery/**                            @matthew-carroll
 packages/camera/**                             @bparrishMines
 packages/connectivity/**                       @cyanglaz @matthew-carroll
 packages/cross_file/**                         @ditman @mvanbeusekom
@@ -24,4 +24,3 @@ packages/path_provider/**                      @matthew-carroll
 packages/shared_preferences/**                 @matthew-carroll
 packages/url_launcher/**                       @mklim
 packages/video_player/**                       @iskakaushik @cyanglaz
-packages/webview_flutter/**                    @amirh