all.tests: do not test EXT_texture_integer with fbo-generatemipmap-formats

glGenerateMipmap doesn't make sense with integer textures. It all fails
with fglrx. Unfortunately, the specification is silence on this.

Feel free to let me know if you think otherwise.

tests/all.tests

@@ -1121,14 +1121,12 @@ add_texwrap_test2(arb_texture_float, '2D', 'GL_RGBA32F')
 
 ext_texture_integer = Group()
 spec['EXT_texture_integer'] = ext_texture_integer
-add_fbo_generatemipmap_extension(ext_texture_integer, 'GL_EXT_texture_integer', 'fbo-generatemipmap-formats')
 # unsupported for int yet
 #add_fbo_clear_extension(ext_texture_integer, 'GL_EXT_texture_integer', 'fbo-clear-formats')
 
 arb_texture_rg = Group()
 spec['ARB_texture_rg'] = arb_texture_rg
 add_fbo_generatemipmap_extension(arb_texture_rg, 'GL_ARB_texture_rg', 'fbo-generatemipmap-formats')
-add_fbo_generatemipmap_extension(arb_texture_rg, 'GL_ARB_texture_rg-int', 'fbo-generatemipmap-formats-int')
 add_fbo_generatemipmap_extension(arb_texture_rg, 'GL_ARB_texture_rg-float', 'fbo-generatemipmap-formats-float')
 add_fbo_clear_extension(arb_texture_rg, 'GL_ARB_texture_rg', 'fbo-clear-formats')
 # unsupported for int yet