i9500: Don't set derived directory permissions

* Derived directory permissions still prevent writes to most of the SD
  card.

Change-Id: I7ded7d316514002f882d24eac5d8b046cd6c9f75
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_device_samsung_i9500 into kk_mkt