Revert "CreatePlatformGLTestContext_egl:  Try GLES 3, then GLES 2."

This reverts commit 0593a840b107c1abd312a03ef4000ddb58454f94.

Reason for revert: Fails with Nexus7-GPU-Tegra3-arm

Original change's description:
> CreatePlatformGLTestContext_egl:  Try GLES 3, then GLES 2.
> 
> Also cleanup.
> 
> Change-Id: I186a7d7f509bc7852241c083414495b6182b916c
> Reviewed-on: https://skia-review.googlesource.com/115922
> Reviewed-by: Brian Salomon <bsalomon@google.com>
> Commit-Queue: Hal Canary <halcanary@google.com>

TBR=bsalomon@google.com,halcanary@google.com

Change-Id: I5f276a89d1b880212861986b5385e567ac884c62
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/116142
Reviewed-by: Hal Canary <halcanary@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>
1 file changed