Restore default readahead window on dm-verity device

Bug: 27849539

Change-Id: I3271ac0fb45ac823cd00be7af5853487ce0a1b8f
diff --git a/init.angler.rc b/init.angler.rc
index 369022c..7f499dc 100755
--- a/init.angler.rc
+++ b/init.angler.rc
@@ -59,9 +59,6 @@
     # set RLIMIT_MEMLOCK to 64MB
     setrlimit 8 67108864 67108864
 
-    # Adjust parameters for dm-verity device
-    write /sys/block/dm-0/queue/read_ahead_kb 2048
-
     # Update dm-verity state and set partition.*.verified properties
     verity_update_state