msm_11ad: remove disabling of PCIe L1

The logic which disables PCIe L1 until FW is
ready is not needed in Talyn since bootloader
is not used and does not control deep-sleep.

Change-Id: I8efec180c3f62b78e05cab2a2e1b6f316600321a
Signed-off-by: Hamad Kadmany <hkadmany@codeaurora.org>
Signed-off-by: Alexei Avshalom Lazar <ailizaro@codeaurora.org>