Revert "Update Launcher Shortcut Asset (UnifiedEmail)"

Need to update Email icons only (Unnecessary work added on for cherry-picking)

This reverts commit 4a40afe216937d93f7203bceb4da6d636f0e2b05.

Change-Id: Ia9a8565a56184f53080ac05dd86009d34e8c1c28
10 files changed