Revert "hammerhead: Add support for modem logging" [DO NOT MERGE]

Modem logging disabled

Bug: 12486394

This reverts commit 62c468c2ec192d99e5f3eaa1b51db96382b7dbd9.

Change-Id: I3edaa52b7d75dc131214837e58ab0134025b62bc
diff --git a/init.hammerhead.rc b/init.hammerhead.rc
index e6d09ba..d75ac66 100644
--- a/init.hammerhead.rc
+++ b/init.hammerhead.rc
@@ -126,10 +126,6 @@
     #venus
     write /sys/bus/msm_subsys/devices/subsys2/restart_level "related"
 
-    # Modem logging collection
-    mkdir /data/diag_logs 0777 system system
-    chmod 666 /dev/diag
-
     # leds
     chown system system /sys/class/leds/red/on_off_ms
     chown system system /sys/class/leds/green/on_off_ms