Revert "Add build dependencies introduced by prelinker."

Not blocking basecamp, revert and re-pull tomorrow.
See https://bugzilla.mozilla.org/show_bug.cgi?id=811671#c60

This reverts commit 8df0ba074f92dd80dee7994df4c5163c3becd9fc.
Merge pull request #13 from vicamo/revert-bug-811671

Revert "Add build dependencies introduced by prelinker."
Bug 825142 - Do not store the Android ringtones in the system image
Merge pull request #15 from gabrielesvelto/bug-825142

Bug 825142 - Do not store the Android ringtones in the system image
Bug 830890 - Make mksh be the default shell in the emulator rather than ash.

ash in the android tree has no [ or test which makes it essentially useless for
non-trivial scripts (like b2g-ps or even run-gdb.sh)
Merge pull request #16 from dhylands/dhylands-830890

Bug 830890 - Make mksh be the default shell in the emulator rather than ash. r=mwu
Bug 811671 - Add build dependencies introduced by prelinker.
Merge pull request #17 from ting-yuan/prelink

Bug 811671 - Add build dependencies introduced by prelinker. r=dhylands