drm/msm/sde: Don't read and clear VBIF errors upon commit

Reading and clearing any errors from the VBIF error registers takes a
significant amount of time during kickoff, and is only used to produce
debug logs when errors are detected. Since we're not debugging hardware
issues in MDSS, remove the VBIF error clearing entirely to reduce
display rendering latency.

Signed-off-by: Sultan Alsawaf <sultan@kerneltoast.com>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>