Revert "gpu: Expand oopr workaround to fallback to ES2 to all android versions."

This reverts commit 2b62fe72.

Reason for revert: The change did not fix any crashes.

Original change's description:
> gpu: Expand oopr workaround to fallback to ES2 to all android versions.
> 
> Temporarily make sure we always fallback to using ES2 for all android
> versions to understand whether a particular crash spike associated with
> the oopr experiment is a result of oopr enabling ES3 for skia.
> 
> R=​ericrk@chromium.org
> 
> Bug: 884659
> Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel
> Change-Id: If5668a65d967294d07687f8d09a114153aa0d09f
> Reviewed-on: https://chromium-review.googlesource.com/1232198
> Reviewed-by: Eric Karl <ericrk@chromium.org>
> Commit-Queue: Khushal <khushalsagar@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#592248}

TBR=khushalsagar@chromium.org,ericrk@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: 884659
Change-Id: Ibf107c8e5c9bd42273393c8c8389f1cbd431d0fb
Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel
Reviewed-on: https://chromium-review.googlesource.com/1246298Reviewed-by: Khushal <khushalsagar@chromium.org>
Commit-Queue: Khushal <khushalsagar@chromium.org>
Cr-Commit-Position: refs/heads/master@{#594406}

gpu/config/gpu_driver_bug_list.json

@@ -2931,7 +2931,11 @@
       "cr_bugs": [866613],
       "description": "Frequent crashes on Adreno (TM) on L and below",
       "os": {
-        "type": "android"
+        "type": "android",
+        "version": {
+          "op": "<",
+          "value": "6.0"
+        }
       },
       "gl_renderer": "Adreno.*",
       "features": [