target-mips: remove MAX_OP_PER_INSTR workaround

Now that MAX_OP_PER_INSTR has been increased to a safer value, removed
the target-mips specific workaround.
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

target-mips/translate.c

@@ -8298,8 +8298,7 @@ gen_intermediate_code_internal (CPUState *env, TranslationBlock *tb,
         qemu_log("search pc %d\n", search_pc);
 
     pc_start = tb->pc;
-    /* Leave some spare opc slots for branch handling. */
-    gen_opc_end = gen_opc_buf + OPC_MAX_SIZE - 16;
+    gen_opc_end = gen_opc_buf + OPC_MAX_SIZE;
     ctx.pc = pc_start;
     ctx.saved_pc = -1;
     ctx.singlestep_enabled = env->singlestep_enabled;