[mips64][codegen] Remove dead argument to Assember::stop

This CL removes Assember::stop invoking's dead argument accordingly
(https://chromium-review.googlesource.com/c/v8/v8/+/1692925).

R=clemensh@chromium.org, xwafish@gmail.com

Change-Id: I9f4d91f15e3bc9e56815a328326997a273e42fee
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1699841Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62675}

AUTHORS

@@ -135,6 +135,7 @@ Mike Gilbert <floppymaster@gmail.com>
 Mike Pennisi <mike@mikepennisi.com>
 Mikhail Gusarov <dottedmag@dottedmag.net>
 Milton Chiang <milton.chiang@mediatek.com>
+Mu Tao <pamilty@gmail.com>
 Myeong-bo Shim <m0609.shim@samsung.com>
 Nicolas Antonius Ernst Leopold Maria Kaiser <nikai@nikai.net>
 Niklas Hambüchen <mail@nh2.me>

test/cctest/test-macro-assembler-mips64.cc

@@ -195,11 +195,11 @@ TEST(LoadAddress) {
   CHECK_EQ(4, check_size);
   __ jr(a4);
   __ nop();
-  __ stop("invalid");
-  __ stop("invalid");
-  __ stop("invalid");
-  __ stop("invalid");
-  __ stop("invalid");
+  __ stop();
+  __ stop();
+  __ stop();
+  __ stop();
+  __ stop();
 
 
   CodeDesc desc;