nv30: remove unused nvfx_fp_memcpy() function and comment nv40_fp_bra()

The nv40_fp_bra() function in the same file is also unused but this is
the only place where the nv30/nv40 isa is documented.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>

src/gallium/drivers/nouveau/nv30/nvfx_fragprog.c

@@ -327,6 +327,8 @@ nv40_fp_rep(struct nvfx_fpc *fpc, unsigned count, unsigned target)
         //util_dynarray_append(&fpc->loop_stack, unsigned, target);
 }
 
+#if 0
+/* documentation only */
 /* warning: this only works forward, and probably only if not inside any IF */
 static void
 nv40_fp_bra(struct nvfx_fpc *fpc, unsigned target)
@@ -352,6 +354,7 @@ nv40_fp_bra(struct nvfx_fpc *fpc, unsigned target)
         reloc.location = fpc->inst_offset + 3;
         util_dynarray_append(&fpc->label_relocs, struct nvfx_relocation, reloc);
 }
+#endif
 
 static void
 nv40_fp_brk(struct nvfx_fpc *fpc)
@@ -1201,17 +1204,3 @@ out_err:
    tgsi_dump(fp->pipe.tokens, 0);
    goto out;
 }
-
-static inline void
-nvfx_fp_memcpy(void* dst, const void* src, size_t len)
-{
-#ifndef PIPE_ARCH_BIG_ENDIAN
-   memcpy(dst, src, len);
-#else
-   size_t i;
-   for(i = 0; i < len; i += 4) {
-      uint32_t v = *(uint32_t*)((char*)src + i);
-      *(uint32_t*)((char*)dst + i) = (v >> 16) | (v << 16);
-   }
-#endif
-}