Updated Staging configs
Revert "drivers/exfat: add Samsung's open source exFat module version 1.2.4"

This reverts commit 3143503ba63416af216c35008dd7eb8ef5b97266.

This is no longer needed as exFat was updated in another place to v1.2.7 here:

https://github.com/OmarEinea/android_kernel_sony_msm8974-pimped/commit/b3e00fb3d4bfa3322f2348bf731da1c76fad432a