[lldb] Disable TestSimulatorPlatform.py because it's causing a SIGHUP

Ever since Dave Zarzycki's patch to sort test start times based on prior
test timing data (https://reviews.llvm.org/D98179) the test suite aborts
with a SIGHUP. I don't believe his patch is to blame, but rather
uncovers an preexisting issue by making test runs more deterministic.

I was able to narrow down the issue to TestSimulatorPlatform.py. The
issue also manifests itself on the standalone bot on GreenDragon [1].
This patch disables the test until we can figure this out.

[1] http://green.lab.llvm.org/green/view/LLDB/job/lldb-cmake-standalone/

rdar://76995109

lldb/test/API/macosx/simulator/TestSimulatorPlatform.py

@@ -42,7 +42,7 @@ class TestSimulatorPlatformLaunching(TestBase):
         if expected_version:
             self.assertEquals(aout_info['min_version_os_sdk'], expected_version)
 
-
+    @skipIf(bugnumber="rdar://76995109")
     def run_with(self, arch, os, vers, env, expected_load_command):
         env_list = [env] if env else []
         triple = '-'.join([arch, 'apple', os + vers] + env_list)