Revert "Update READ_CLIPBOARD_IN_BACKGROUND to be grantable via ..."

Revert "Add READ_CLIPBOARD_IN_BACKGROUND to the SYSTEM_TEXT_INTE..."

Revert "Update CTS for the READ_CLIPBOARD_IN_BACKGROUND permission"

Revert submission 17145144-cc-clipboard-permission

Reason for revert: Breaks UnbundledChooserActivityTest#copyTextToClipboard
Reverted Changes:
I6f3fbe3fe:Update CTS for the READ_CLIPBOARD_IN_BACKGROUND pe...
Icba3763e6:Add READ_CLIPBOARD_IN_BACKGROUND to the SYSTEM_TEX...
I68abf8c20:Update READ_CLIPBOARD_IN_BACKGROUND to be grantabl...

Bug: 224845036
Change-Id: I5d646865488a00aaeb393dd57ac19cc98b1e2bce