Delete unused files

usr/lib/brain-config/cmstart.sh

@@ -1,6 +0,0 @@
-#!/bin/sh
-if raspi-config nonint is_kms ; then
-    if ps ax | grep -v grep | grep -q openbox ; then
-        exec xcompmgr -aR
-    fi
-fi

usr/share/brain-config/10-blanking.conf

@@ -1,11 +0,0 @@
-Section "Extensions"
-    Option      "DPMS" "Disable"
-EndSection
-
-Section "ServerLayout"
-    Identifier "ServerLayout0"
-    Option "StandbyTime" "0"
-    Option "SuspendTime" "0"
-    Option "OffTime"     "0"
-    Option "BlankTime"   "0"
-EndSection