phy: qcom-ufs-qmp-v3: remove legacy v3 phy support

8998 v1 was using the 1-lane PHY which required separate calibration
sequence in addition to workaround to manage entering in and out of low
power mode. As this PHY isn't used on any of the new chipsets and msm-4.9
codebase will not be used with 8998 v1 ever, this change cleans up 8998 v1
PHY support related code.

Change-Id: I6037ff37b5043dbfd54698a84f31e709b890cc2f
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>