msm_fb: display: remove #if 0

Cleanup all #if 0s in display driver.

Change-Id: I32473b33ad4dff3e5d3d91aae42d70955836cd52
Signed-off-by: Huaibin Yang <huaibiny@codeaurora.org>
Signed-off-by: Siddhartha Agrawal <agrawals@codeaurora.org>