Revert "run: add shaderdb flag for v3d"
This reverts commit 47ded5b3.
Mistake on my part, V3D_DEBUG=shaderdb
is actually for manually
dumping stats from random apps in the shader-db format so that they can
be read using shader-db's report.py
.
Having V3D_DEBUG=shaderdb
in shader-db makes it dump the information
twice, causing issues.