Revert "[lldb] look up function names in the swift language plugin (#11477)"

This reverts commit 13c116b.

Author: augusto2112

lldb/source/Core/Module.cpp

@@ -661,11 +661,7 @@ Module::LookupInfo::LookupInfo(ConstString name,
     if (language != eLanguageTypeUnknown)
       lang_types.push_back(language);
     else
-      lang_types = {eLanguageTypeObjC, eLanguageTypeC_plus_plus,
-#ifdef LLDB_ENABLE_SWIFT
-                    eLanguageTypeSwift
-#endif
-      };
+      lang_types = {eLanguageTypeObjC, eLanguageTypeC_plus_plus};
 
     for (LanguageType lang_type : lang_types) {
       if (Language *lang = Language::FindPlugin(lang_type))

lldb/test/API/lang/swift/break_by_partial_name/TestSwiftBreakByPartialName.py

@@ -13,10 +13,12 @@
 Tests that we can break on a partial name of a Swift function
 Effectively tests our chopper of Swift demangled names
 """
+import lldb
 from lldbsuite.test.lldbtest import *
 from lldbsuite.test.decorators import *
 import lldbsuite.test.lldbutil as lldbutil
 
+@skipIf(bugnumber = "rdar://159531198")
 class SwiftPartialBreakTest(TestBase):
     @swiftTest
     def test_swift_partial_break(self):