Revert "ANDROID: ftrace: vendor hook for ftrace dump on oops"

This reverts commit fbbc48ef as it
conflicts with the ftrace rewrite in this area in 6.2-rc1.  If these
hooks are really needed (why would a driver need to ever touch ftrace
buffers????) then they can be added back later.

Bug: 177387994
Cc: Prateek Sood <prsood@codeaurora.org>
Cc: Mukesh Ojha <mojha@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: If3a8149b3358c4376b6533b2a2d3d5e8a8a59532