[UI] Update icon.

assets/icon/Rendering Instructions.txt

@@ -1,26 +0,0 @@
-
-/// -------------- *** -------------- ///
-///                                   ///
-///      Rendering Instructions       ///
-///                                   ///
-/// -------------- *** -------------- ///
-
-For those not well-versed in Blender, this document explains
-how to render the icon in any desired resolution and color.
-
-To Change Resolution:
-  1. Open Icon.blend in Blender.
-  2. In the right tool pane, look for "Resolution" under the
-     "Dimensions" settings. It should be defaulted to 512x512.
-     This is where you'll change the icon output dimensions.
-  3. After you've set the value to what you want, hit F12 or
-     select 'Render' > 'Render Image' from the top bar. This
-     will render the icon.
-  4. To save, hit F3 or select 'Image' > 'Save As Image' on
-     the left toward the middle of the screen.
-
-To Change Colors:
-  1. Open Icon.blend in Blender.
-  2. The icon's colors will appear in the bottom window as
-     labeled nodes. Change them by clicking on each node.
-  3. Render and save as described above.