[clutter] test-cogl-materials: Remove a redundant comment

[Neil Roberts <nroberts src gnome org>]

commit 2bb4c2c6cb8afee99c0ebfdb9808a8d175fa4503
Author: Neil Roberts <neil linux intel com>
Date:   Mon Jul 11 16:32:10 2011 +0100

    test-cogl-materials: Remove a redundant comment
    
    test-cogl-materials had a weird comment about glReadPixels using
    inverted coordinates but the test now uses cogl_read_pixels instead of
    glReadPixels so it is irrelevant.

 tests/conform/test-cogl-materials.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/tests/conform/test-cogl-materials.c b/tests/conform/test-cogl-materials.c
index 31a2141..70ae5a6 100644
--- a/tests/conform/test-cogl-materials.c
+++ b/tests/conform/test-cogl-materials.c
@@ -39,7 +39,6 @@ check_pixel (TestState *state, int x, int y, guint32 color)
 
   /* See what we got... */
 
-  /* NB: glReadPixels is done in GL screen space so y = 0 is at the bottom */
   y_off = y * QUAD_WIDTH + (QUAD_WIDTH / 2);
   x_off = x * QUAD_WIDTH + (QUAD_WIDTH / 2);