[lldb] Remove unused XcodeSDK::SupportsSwift (NFC) (#154572)

Author: kastiglione

lldb/include/lldb/Utility/XcodeSDK.h

@@ -86,8 +86,6 @@ class XcodeSDK {
   Type GetType() const;
   llvm::StringRef GetString() const;
   const FileSpec &GetSysroot() const;
-  /// Whether this Xcode SDK supports Swift.
-  bool SupportsSwift() const;
 
   /// Whether LLDB feels confident importing Clang modules from this SDK.
   static bool SDKSupportsModules(Type type, llvm::VersionTuple version);

lldb/source/Utility/XcodeSDK.cpp

@@ -243,29 +243,6 @@ bool XcodeSDK::SDKSupportsModules(XcodeSDK::Type sdk_type,
   return false;
 }
 
-bool XcodeSDK::SupportsSwift() const {
-  XcodeSDK::Info info = Parse();
-  switch (info.type) {
-  case Type::MacOSX:
-    return info.version.empty() || info.version >= llvm::VersionTuple(10, 10);
-  case Type::iPhoneOS:
-  case Type::iPhoneSimulator:
-    return info.version.empty() || info.version >= llvm::VersionTuple(8);
-  case Type::AppleTVSimulator:
-  case Type::AppleTVOS:
-    return info.version.empty() || info.version >= llvm::VersionTuple(9);
-  case Type::WatchSimulator:
-  case Type::watchOS:
-    return info.version.empty() || info.version >= llvm::VersionTuple(2);
-  case Type::XROS:
-  case Type::XRSimulator:
-  case Type::Linux:
-    return true;
-  default:
-    return false;
-  }
-}
-
 bool XcodeSDK::SDKSupportsModules(XcodeSDK::Type desired_type,
                                   const FileSpec &sdk_path) {
   ConstString last_path_component = sdk_path.GetFilename();

lldb/unittests/Utility/XcodeSDKTest.cpp

@@ -102,17 +102,6 @@ TEST(XcodeSDKTest, SDKSupportsModules) {
 }
 #endif
 
-TEST(XcodeSDKTest, SDKSupportsSwift) {
-  EXPECT_TRUE(XcodeSDK("iPhoneSimulator12.0.sdk").SupportsSwift());
-  EXPECT_TRUE(XcodeSDK("iPhoneSimulator12.0.Internal.sdk").SupportsSwift());
-  EXPECT_FALSE(XcodeSDK("iPhoneSimulator7.2.sdk").SupportsSwift());
-  EXPECT_TRUE(XcodeSDK("MacOSX10.10.sdk").SupportsSwift());
-  EXPECT_FALSE(XcodeSDK("MacOSX10.9.sdk").SupportsSwift());
-  EXPECT_TRUE(XcodeSDK("Linux.sdk").SupportsSwift());
-  EXPECT_TRUE(XcodeSDK("MacOSX.sdk").SupportsSwift());
-  EXPECT_FALSE(XcodeSDK("EverythingElse.sdk").SupportsSwift());
-}
-
 TEST(XcodeSDKTest, GetCanonicalNameAndConstruct) {
   XcodeSDK::Info info;
   info.type = XcodeSDK::Type::MacOSX;