Merge pull request #22435 from harlanhaskins/oops

[ParseableInterface] Remove some accidentally-committed code

Author: Harlan Haskins

include/swift/Frontend/ParseableInterfaceSupport.h

@@ -15,8 +15,6 @@
 
 #include "swift/Basic/LLVM.h"
 #include "swift/Serialization/SerializedModuleLoader.h"
-#include "llvm/ADT/DenseMap.h"
-#include "llvm/Support/Errc.h"
 #include "llvm/Support/Regex.h"
 
 namespace swift {
@@ -31,25 +29,6 @@ struct ParseableInterfaceOptions {
   std::string ParseableInterfaceFlags;
 };
 
-class PrebuiltModuleCache {
-  StringRef cacheDir;
-  llvm::DenseMap<StringRef, uint64_t> hashedContents;
-  PrebuiltModuleCache(StringRef cacheDir): cacheDir(cacheDir) {}
-
-  std::error_code loadHashes();
-public:
-  static llvm::ErrorOr<PrebuiltModuleCache>
-  loadFromDirectory(StringRef directory);
-
-  StringRef getDirectory() { return cacheDir; }
-
-  Optional<uint64_t> getInterfaceHash(StringRef moduleName) {
-    auto it = hashedContents.find(moduleName);
-    if (it == hashedContents.end()) return None;
-    return it->second;
-  }
-};
-
 llvm::Regex getSwiftInterfaceFormatVersionRegex();
 llvm::Regex getSwiftInterfaceModuleFlagsRegex();