Remove viral readproc group dependency.

This has been copy pasted and isn't actually required.

Test: all hals manually tested to work on internal marlin (which have them binderized).
  Note: tv hals not tested (and they never have been). Filed b/36562029
  Note: for thermal hal, could only run VTS/check logs for errors.
Test: lshal outputs proper stuff
Fixes: 31928447
Change-Id: Id1be584dc0fa2d70e9189b922335146bf6d1382d
diff --git a/graphics/composer/2.1/default/android.hardware.graphics.composer@2.1-service.rc b/graphics/composer/2.1/default/android.hardware.graphics.composer@2.1-service.rc
index 4f01bd9..b6060db 100644
--- a/graphics/composer/2.1/default/android.hardware.graphics.composer@2.1-service.rc
+++ b/graphics/composer/2.1/default/android.hardware.graphics.composer@2.1-service.rc
@@ -1,6 +1,6 @@
 service hwcomposer-2-1 /vendor/bin/hw/android.hardware.graphics.composer@2.1-service
     class hal
     user system
-    group graphics drmrpc readproc
+    group graphics drmrpc
     capabilities SYS_NICE
     onrestart restart surfaceflinger