Revert "ANDROID: power: Add vendor hook for suspend"

This reverts part of commit 258557ef.

The hook android_vh_resume_begin is not used by any vendor, so remove it
to help with merge issues with future LTS releases.

If this is needed by any real user, it can easily be reverted to add it
back and then the symbol should be added to the abi list at the same
time to prevent it from being removed again later.

Bug: 203756332
Bug: 232541623
Cc: Sophia Wang <yodagump@google.com>
Cc: Rick Yiu <rickyiu@google.com>
Cc: Will McVicker <willmcvicker@google.com>
Change-Id: I49f06bb2c1adf3bf9d507c075ccb07f776fad923
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>