[lldb] Remove self-skipping code from lldb-server tests

We already do category based skipping in checkDebugServerSupport in
dotest.py.

lldb/packages/Python/lldbsuite/test/tools/lldb-server/gdbremote_testcase.py

diff --git a/lldb/packages/Python/lldbsuite/test/tools/lldb-server/gdbremote_testcase.py b/lldb/packages/Python/lldbsuite/test/tools/lldb-server/gdbremote_testcase.py
index a28d063..5964b24 100644
--- a/lldb/packages/Python/lldbsuite/test/tools/lldb-server/gdbremote_testcase.py
+++ b/lldb/packages/Python/lldbsuite/test/tools/lldb-server/gdbremote_testcase.py
@@ -227,8 +227,6 @@
             self.debug_monitor_exe = re.sub(r' \(deleted\)$', '', exe)
         else:
             self.debug_monitor_exe = get_lldb_server_exe()
-            if not self.debug_monitor_exe:
-                self.skipTest("lldb-server exe not found")
 
         self.debug_monitor_extra_args = ["gdbserver"]
         self.setUpServerLogging(is_llgs=True)
@@ -237,8 +235,6 @@
 
     def _init_debugserver_test(self):
         self.debug_monitor_exe = get_debugserver_exe()
-        if not self.debug_monitor_exe:
-            self.skipTest("debugserver exe not found")
         self.setUpServerLogging(is_llgs=False)
         self.reverse_connect = True