Merge pull request swiftlang#1468 from tshortli/lazy-typecheck-emit-module-only

Remove special handling of the -experimental-lazy-typecheck flag

Author: tshortli

Sources/SwiftDriver/Driver/Driver.swift

@@ -2096,7 +2096,7 @@ extension Driver {
  case .indexFile:
  compilerOutputType = .indexData
 
- case .parse, .resolveImports, .typecheck, .experimentalLazyTypecheck,
+ case .parse, .resolveImports, .typecheck,
  .dumpParse, .printAst, .dumpTypeRefinementContexts, .dumpScopeMaps,
  .dumpInterfaceHash, .dumpTypeInfo, .verifyDebugInfo:
  compilerOutputType = nil

Sources/SwiftDriver/Jobs/EmitModuleJob.swift

@@ -85,11 +85,6 @@ extension Driver {
 
  commandLine.appendFlags("-frontend", "-emit-module", "-experimental-skip-non-inlinable-function-bodies-without-types")
 
- if parsedOptions.hasArgument(.experimentalLazyTypecheck) {
- commandLine.appendFlag("-experimental-lazy-typecheck")
- commandLine.appendFlag("-experimental-skip-non-exportable-decls")
- }
-
  // Add the inputs.
  for input in self.inputFiles where input.type.isPartOfSwiftCompilation {
  commandLine.append(.path(input.file))