OpenGL2: Remove per fragment tangent space calculation code.

code/renderergl2/tr_bsp.c

@@ -809,7 +809,6 @@ static void ParseFace( dsurface_t *ds, drawVert_t *verts, float *hdrVertColors,
 
 	surf->data = (surfaceType_t *)cv;
 
-#ifdef USE_VERT_TANGENT_SPACE
 	// Calculate tangent spaces
 	{
 		srfVert_t      *dv[3];
@@ -823,7 +822,6 @@ static void ParseFace( dsurface_t *ds, drawVert_t *verts, float *hdrVertColors,
 			R_CalcTangentVectors(dv);
 		}
 	}
-#endif
 }
 
 
@@ -963,7 +961,6 @@ static void ParseTriSurf( dsurface_t *ds, drawVert_t *verts, float *hdrVertColor
 		cv->numIndexes -= badTriangles * 3;
 	}
 
-#ifdef USE_VERT_TANGENT_SPACE
 	// Calculate tangent spaces
 	{
 		srfVert_t      *dv[3];
@@ -977,7 +974,6 @@ static void ParseTriSurf( dsurface_t *ds, drawVert_t *verts, float *hdrVertColor
 			R_CalcTangentVectors(dv);
 		}
 	}
-#endif
 }
 
 /*
@@ -1773,9 +1769,7 @@ static int BSPSurfaceCompare(const void *a, const void *b)
 static void CopyVert(const srfVert_t * in, srfVert_t * out)
 {
 	VectorCopy(in->xyz,      out->xyz);
-#ifdef USE_VERT_TANGENT_SPACE
 	VectorCopy4(in->tangent, out->tangent);
-#endif
 	VectorCopy4(in->normal,   out->normal);
 	VectorCopy4(in->lightdir, out->lightdir);