Revert "Disable use_buffer_age to workaround driver issue"

This reverts commit 83759b7.

* Our Adreno driver is support EGL_KHR_partial_update,
  beginning of the https://android-review.googlesource.com/c/platform/frameworks/base/+/320411,
  the EGL_EXT_buffer_age extension was forcibly enabled
* If disable EGL_EXT_buffer_age extension support, the following OpenGL memory leak will occur:
* W OpenGLRenderer: dequeueBuffer failed, error = -110; switching to fallback

Change-Id: Ie511aa32922cb53a1d70160fe6f0a2dd80cf413c | AOSP

common-prop.mk

@@ -109,10 +109,6 @@ PRODUCT_PROPERTY_OVERRIDES += \
 PRODUCT_PROPERTY_OVERRIDES += \
     ro.surface_flinger.force_hwc_copy_for_virtual_displays=true
 
-# Disable buffer age (b/74534157)
-PRODUCT_PROPERTY_OVERRIDES += \
-    debug.hwui.use_buffer_age=false
-
 # Stagefright
 PRODUCT_PROPERTY_OVERRIDES += \
     media.stagefright.thumbnail.prefer_hw_codecs=true