[gtk] gl renderer: Remove an outdated comment

[Timm Bäder <baedert src gnome org>]

commit 719b2b0525aadc607f5b250b5b81e08480662bcb
Author: Timm Bäder <mail baedert org>
Date:   Sun May 27 17:37:22 2018 +0200

    gl renderer: Remove an outdated comment

 gsk/gl/gskglrenderer.c | 2 --
 1 file changed, 2 deletions(-)
---
diff --git a/gsk/gl/gskglrenderer.c b/gsk/gl/gskglrenderer.c
index a0e962524d..3f14304b94 100644
--- a/gsk/gl/gskglrenderer.c
+++ b/gsk/gl/gskglrenderer.c
@@ -1602,8 +1602,6 @@ apply_color_op (const Program  *program,
                 const RenderOp *op)
 {
   OP_PRINT (" -> Color: (%f, %f, %f, %f)", op->color.red, op->color.green, op->color.blue, op->color.alpha);
-  /* TODO: We use color.color_location here and this is right for all three of the programs above,
-   *       but that's just a coincidence. */
   glUniform4f (program->color.color_location,
                op->color.red, op->color.green, op->color.blue, op->color.alpha);
 }