OpenGL2: Remove per fragment tangent space calculation code.

code/renderergl2/tr_shader.c

@@ -2120,12 +2120,10 @@ static void ComputeVertexAttribs(void)
 		{
 			shader.vertexAttribs |= ATTR_NORMAL;
 
-#ifdef USE_VERT_TANGENT_SPACE
 			if ((pStage->glslShaderIndex & LIGHTDEF_LIGHTTYPE_MASK) && !(r_normalMapping->integer == 0 && r_specularMapping->integer == 0))
 			{
 				shader.vertexAttribs |= ATTR_TANGENT;
 			}
-#endif
 
 			switch (pStage->glslShaderIndex & LIGHTDEF_LIGHTTYPE_MASK)
 			{