Revert "clocksource/drivers/timer-ti-dm: Handle dra7 timer wrap errata i940"

This reverts commit 5babc397 as it
breaks the ABI and is not needed for android systems at this point in
time.

Bug: 161946584
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Iab9d380f3ee9f263c3987582ae433763c4f793b8