acheron: Drop I/O prefetcher

This depends on the already removed QTI perf stack.

Change-Id: Ia0e899c844ee9585bc9874ee8d630965a47a87a0

proprietary/vendor/etc/init/vendor.qti.hardware.iop@2.0-service.rc

@@ -1,17 +0,0 @@
-#   @file    io-p.c
-#   @brief   Defination for iop service
-#
-#   DESCRIPTION
-#    ---------------------------------------------------------------------------
-#        Copyright (c) 2011-2017 Qualcomm Technologies, Inc.
-#        All Rights Reserved.
-#        Confidential and Proprietary - Qualcomm Technologies, Inc.
-#    ---------------------------------------------------------------------------
-
-service iop-hal-2-0 /vendor/bin/hw/vendor.qti.hardware.iop@2.0-service
-    interface vendor.qti.hardware.iop@2.0::IIop default
-    oneshot
-    disabled
-    class hal
-    user root
-    group root readproc