Revert "libhwcomposer: print a log if there is any delay in vsync read."

This reverts commit 624cef4052af2995c6360bca71f6acbf529cbe3a.
This log is misleading as it does not print the actual vsync time
when vsync is disabled then enabled. It prints accumulated time
from vsync disable to next vsync enable.

Change-Id: I0ca3c9bc1e07a048e4563254ab83a3dd6b8c55ec
hwc: Remove need for intermediate buffer for c2d composition

A-Family device NON PRO 8960 uses copybit composition. The
intermediate buffers allocated are not needed when we can
compose onto fb frame.

Change-Id: I13fd2deb328a3ef4b6738cfe7030fe67ea7bd6c6

Conflicts:
        libhwcomposer/hwc_copybit.cpp
        libhwcomposer/hwc_utils.cpp
Merge "Revert "libhwcomposer: print a log if there is any delay in vsync read.""
Merge "hwc: Remove need for intermediate buffer for c2d composition"
Merge AU_LINUX_ANDROID_KK_2.7_RB1.04.04.02.007.028 on remote branch

Change-Id: If56421f0d857d2bd5f0f08319a0a1f2ab601a543
Merge "Merge AU_LINUX_ANDROID_KK_2.7_RB1.04.04.02.007.028 on remote branch"
hwc: Remove need for intermediate buffer for c2d composition

A-Family device NON PRO 8960 uses copybit composition. The
intermediate buffers allocated are not needed when we can
compose onto fb frame.

Change-Id: I13fd2deb328a3ef4b6738cfe7030fe67ea7bd6c6

Conflicts:
        libhwcomposer/hwc_copybit.cpp
        libhwcomposer/hwc_utils.cpp
Revert "libhwcomposer: make the vsync delay check more informative"

This reverts commit 11f2ce013ab1c6b4d3354c8c862ffa281c2e8f4f.
Merge remote-tracking branch 'caf/kk_2.7_rb1.22' into HEAD