Revert "Fix toolchain path"

We don't really need this.
We can use ARM_EABI_TOOLCHAIN variable as you can see in this commit: https://github.com/TeamCanjica/android_device_samsung_janice/commit/71f2ec9feb609d97f73df452cc26db0dd67103ef
Merge pull request #2 from t4n017/patch-1

Revert "Fix toolchain path"