init.rc: remove "on fs" section

This was only ever used by the emulator. Now the emulator
uses an fstab file.

Change-Id: I1a071e567e1f1a379f9c8079cc2dc17660d8455f
diff --git a/rootdir/init.rc b/rootdir/init.rc
index dc90c73..6713c6d 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -131,14 +131,6 @@
 # This is needed by any process that uses socket tagging.
     chmod 0644 /dev/xt_qtaguid
 
-on fs
-# mount mtd partitions
-    # Mount /system rw first to give the filesystem a chance to save a checkpoint
-    mount ext4 mtd@system /system
-    mount ext4 mtd@system /system ro remount
-    mount ext4 mtd@userdata /data nosuid nodev
-    mount ext4 mtd@cache /cache nosuid nodev
-
 on post-fs
     # once everything is setup, no need to modify /
     mount rootfs rootfs / ro remount