gs101: Use SkiaGL as RenderEngine backend

This reverts commit 6968365b28142e601a8d65575ad9f7c76208773c.

Reason for revert: b/281967184 and b/280343156

Even though using SkiaVK with RenderEngine has definite benefits, it appears to need more "soak time" in order to squeeze out some functional bugs.

Test: none-returning RenderEngine to using SkiaGL, as it was before
Bug: 281967184
Bug: 280343156
Change-Id: Iaea0d102e9f99337622ef116ce0dc921c0394c4c
diff --git a/device.mk b/device.mk
index 829e6a3..0ab5fc6 100644
--- a/device.mk
+++ b/device.mk
@@ -250,7 +250,7 @@
 PRODUCT_VENDOR_PROPERTIES += \
 	ro.opengles.version=196610 \
 	graphics.gpu.profiler.support=true \
-	debug.renderengine.backend=skiavkthreaded
+	debug.renderengine.backend=skiaglthreaded
 
 # GRAPHICS - GPU (end)
 # ####################