Revert "msm: kgsl: conservative: Update thresholds"

This reverts commit b4df8c08a17dc8be67575b3e67b42e542d046d14.
Revert "msm: kgsl: Import conservative governor from jb422 branch"

This reverts commit 5ef508f924ddfe11f48022a8cb42fdcd0755348b.