mesa: Remove support for named parameters.

These were only part of NV_fragment_program, so we can kill them.

The fact that PROGRAM_NAMED_PARAM appears in r200_vertprog.c is rather
comedic, but also demonstrates that people just spam the various types
of parameters everywhere because they're confusing.

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Eric Anholt <eric@anholt.net>

src/mesa/drivers/dri/i915/i915_fragprog.c

@@ -173,7 +173,6 @@ src_vector(struct i915_fragment_program *p,
 
    case PROGRAM_CONSTANT:
    case PROGRAM_STATE_VAR:
-   case PROGRAM_NAMED_PARAM:
    case PROGRAM_UNIFORM:
       src = i915_emit_param4fv(p,
 	 &program->Base.Parameters->ParameterValues[source->Index][0].f);