Revert "Add a requiresVertexShader method to GrGLEffect"

Revert "Add a requiresVertexShader method to GrGLEffect"

This reverts commit 1a30a3af805b7ea688d4a0f0bfe373c204085a27. We're
going to take a different direction for vertexless shaders.

Committed: http://code.google.com/p/skia/source/detail?r=11521

[Chris Dalton, 2013-09-18 20:17:48]

We probably don't want to take this until the entire vertexless rework is ready
to go.

[bsalomon, 2013-09-18 20:18:05]

lgtm

[bsalomon, 2013-09-18 20:18:16]

On 2013/09/18 20:18:05, bsalomon wrote:
> lgtm

Do you want me to commit this?

[bsalomon, 2013-09-18 21:16:56]

On 2013/09/18 20:17:48, cdalton wrote:
> We probably don't want to take this until the entire vertexless rework is
ready
> to go.

SGTM

[commit-bot: I haz the power, 2013-09-30 15:03:15]

CQ is trying da patch. Follow status at
https://skia-tree-status.appspot.com/cq/cdalton@nvidia.com/23464082/1

[commit-bot: I haz the power, 2013-09-30 15:14:07]

Change committed as 11521