d3d12: remove special-casing for PNTC

src/gallium/drivers/d3d12/d3d12_lower_point_sprite.c

@@ -264,23 +264,14 @@ d3d12_lower_point_sprite(nir_shader *shader,
    for (unsigned int sem = 0; sem < 9; sem++) {
       if (point_coord_enable & BITFIELD64_BIT(sem)) {
          char tmp[100];
-         const char *var_name;
-         const struct glsl_type *var_type;
-         unsigned location;
+         unsigned location = VARYING_SLOT_VAR0 + sem;
 
-         if (sem == 8) {
-            var_name = "gl_PointCoord";
-            location = VARYING_SLOT_PNTC;
-         } else {
          snprintf(tmp, ARRAY_SIZE(tmp), "gl_TexCoord%dMESA", count);
-            var_name = tmp;
-            location = VARYING_SLOT_VAR0 + sem;
-         }
 
          nir_variable *var = nir_variable_create(shader,
                                                  nir_var_shader_out,
                                                  glsl_vec4_type(),
-                                                 var_name);
+                                                 tmp);
          var->data.location = location;
          state.point_coord_out[count++] = var;
       }