OpenGL2: Remove per fragment tangent space calculation code.

code/renderergl2/tr_shade.c

@@ -1024,9 +1024,7 @@ static unsigned int RB_CalcShaderVertexAttribs( shaderCommands_t *input )
 		if (vertexAttribs & ATTR_NORMAL)
 		{
 			vertexAttribs |= ATTR_NORMAL2;
-#ifdef USE_VERT_TANGENT_SPACE
 			vertexAttribs |= ATTR_TANGENT2;
-#endif
 		}
 	}