Remove enums duplicated in feature/extension blocks.
Fixes #460
diff --git a/xml/gl.xml b/xml/gl.xml
index 1319d48..03d34a7 100644
--- a/xml/gl.xml
+++ b/xml/gl.xml
@@ -40514,7 +40514,6 @@
<enum name="GL_FRAMEBUFFER_BINDING"/>
<enum name="GL_RENDERBUFFER_BINDING"/>
<enum name="GL_MAX_RENDERBUFFER_SIZE"/>
- <enum name="GL_NO_ERROR"/>
<enum name="GL_GUILTY_CONTEXT_RESET"/>
<enum name="GL_INNOCENT_CONTEXT_RESET"/>
<enum name="GL_UNKNOWN_CONTEXT_RESET"/>
@@ -48145,7 +48144,6 @@
<enum name="GL_CONSERVATIVE_RASTER_MODE_NV"/>
<enum name="GL_CONSERVATIVE_RASTER_MODE_POST_SNAP_NV"/>
<enum name="GL_CONSERVATIVE_RASTER_MODE_PRE_SNAP_TRIANGLES_NV"/>
- <enum name="GL_CONSERVATIVE_RASTER_MODE_NV"/>
<command name="glConservativeRasterParameteriNV"/>
</require>
</extension>