This reverts commit 625f5b2f.

Reason for revert: Seems to break the Android build with suffix:

~/chromium/src$ gn args out/Release64
Waiting for editor on "/usr/local/google/home/cnorthrop/chromium/src/out/Release64/args.gn"...
Generating files...
ERROR Unresolved dependencies.
//third_party/angle:compressed_symbols(//build/toolchain/android:android_clang_arm)
  needs //third_party/angle:libEGL_angle(//build/toolchain/android:android_clang_arm)
//third_party/angle:compressed_symbols(//build/toolchain/android:android_clang_arm)
  needs //third_party/angle:libGLESv1_CM_angle(//build/toolchain/android:android_clang_arm)

<snip>

Original change's description:
> Cleanup angle_libs_suffix in BUILD.gn.
> 
> We can use output_name instead of repeating the libs suffix in the GN
> files.
> 
> Bug: angleproject:3611
> Change-Id: Ic87c1378aac8be8e1aec695ddbe5c8ec2ed3187b
> Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1678403
> Commit-Queue: Jamie Madill <jmadill@chromium.org>
> Reviewed-by: Tim Van Patten <timvp@google.com>
> Reviewed-by: Geoff Lang <geofflang@chromium.org>

TBR=geofflang@chromium.org,timvp@google.com,jmadill@chromium.org

Change-Id: I532d9cf28c21ddf65d820d3fc323c87dbc844d96
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: angleproject:3611
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1679990Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>