afdo_metadata: Remove the entry for 3.14

Since we do not update AFDO profiels for kernel 3.14 anymore,
there is no need to keep the entry.

BUG=None
TEST=None

Change-Id: If39a5beabd246a703c3aeb458a27ec450a88dffe
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/toolchain-utils/+/2236653
Reviewed-by: Tiancong Wang <tcwang@google.com>
Reviewed-by: Manoj Gupta <manojgupta@chromium.org>
Commit-Queue: Tiancong Wang <tcwang@google.com>
Tested-by: Tiancong Wang <tcwang@google.com>
1 file changed