[test] Remove old gc and deopt fuzzers

They have been replaced with num_fuzzer.

Bug: v8:6917
Change-Id: I2f78df308cec0a58f0d665bce82503dee68fcebc
Reviewed-on: https://chromium-review.googlesource.com/888641Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michał Majewski <majeski@google.com>
Cr-Commit-Position: refs/heads/master@{#50903}

tools/run-deopt-fuzzer.py

-#!/usr/bin/env python
-#
-# Copyright 2017 the V8 project authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-
-import sys
-
-from testrunner import deopt_fuzzer
-
-
-if __name__ == "__main__":
-  sys.exit(deopt_fuzzer.DeoptFuzzer().execute())

tools/run-gc-fuzzer.py

-#!/usr/bin/env python
-#
-# Copyright 2017 the V8 project authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-
-import sys
-
-from testrunner import gc_fuzzer
-
-
-if __name__ == "__main__":
-  sys.exit(gc_fuzzer.GCFuzzer().execute())

tools/run-num-fuzzer.isolate

@@ -4,11 +4,9 @@
 {
   'variables': {
     'command': [
-      'run-deopt-fuzzer.py',
+      'run-num-fuzzer.py',
     ],
     'files': [
-      'run-deopt-fuzzer.py',
-      'run-gc-fuzzer.py',
       'run-num-fuzzer.py',
     ],
   },