mesa: Drop ARB program helper functions that are no longer used.

Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23111>

src/mesa/program/prog_instruction.c

@@ -60,22 +60,6 @@ _mesa_init_instructions(struct prog_instruction *inst, GLuint count)
 }
 
 
-/**
- * Copy an array of program instructions.
- * \param dest  pointer to destination.
- * \param src  pointer to source.
- * \param n  number of instructions to copy.
- * \return pointer to destination.
- */
-struct prog_instruction *
-_mesa_copy_instructions(struct prog_instruction *dest,
-                        const struct prog_instruction *src, GLuint n)
-{
-   memcpy(dest, src, n * sizeof(struct prog_instruction));
-   return dest;
-}
-
-
 /**
  * Basic info about each instruction
  */

src/mesa/program/prog_instruction.h

@@ -266,10 +266,6 @@ struct gl_program;
 extern void
 _mesa_init_instructions(struct prog_instruction *inst, GLuint count);
 
-extern struct prog_instruction *
-_mesa_copy_instructions(struct prog_instruction *dest,
-                        const struct prog_instruction *src, GLuint n);
-
 extern GLuint
 _mesa_num_inst_src_regs(enum prog_opcode opcode);