Revert "fix chromium"

This reverts commit 3bc748ae926b7361b9fa1b8bd6d1d6641a425dc7.
Revert "build: update prebuilt chromium script"

This reverts commit d25126107a5c05007dc7a6202b11a30246e538d0.
Revert "build: Add chromium prebuilt support to envsetup.sh && The core Makefile"

This reverts commit 07725fc724f658559d508a6c98846fad817615de.