AST: Remove ProtocolDecl::getRequirementSignatureAsGenericSignature()

Author: slavapestov

include/swift/AST/Decl.h

@@ -5368,10 +5368,6 @@ class ProtocolDecl final : public NominalTypeDecl {
   /// view of the generic system; see RequirementSignature.h for details.
   RequirementSignature getRequirementSignature() const;
 
-  /// Sometimes we want to make a fake generic signature from the requirements
-  /// of a requirement signature.
-  GenericSignature getRequirementSignatureAsGenericSignature() const;
-
   /// Is the requirement signature currently being computed?
   bool isComputingRequirementSignature() const;
 

lib/AST/ASTDumper.cpp

@@ -1188,9 +1188,13 @@ namespace {
       printCommon(PD, "protocol", label);
 
       if (PD->isRequirementSignatureComputed()) {
-        auto requirements = PD->getRequirementSignatureAsGenericSignature();
-        std::string reqSigStr = requirements->getAsString();
-        printFieldQuoted(reqSigStr, "requirement_signature");
+        auto reqSig = PD->getRequirementSignature();
+
+        std::string reqSigStr;
+        llvm::raw_string_ostream out(reqSigStr);
+        reqSig.print(PD, out);
+
+        printFieldQuoted(out.str(), "requirement_signature");
       } else {
         printFlag("uncomputed_requirement_signature");
       }

lib/AST/Decl.cpp

@@ -6738,12 +6738,6 @@ RequirementSignature ProtocolDecl::getRequirementSignature() const {
                RequirementSignature());
 }
 
-GenericSignature ProtocolDecl::getRequirementSignatureAsGenericSignature() const {
-  return GenericSignature::get(
-      {getSelfInterfaceType()->castTo<GenericTypeParamType>()},
-      getRequirementSignature().getRequirements());
-}
-
 bool ProtocolDecl::isComputingRequirementSignature() const {
   return getASTContext().evaluator.hasActiveRequest(
                  RequirementSignatureRequest{const_cast<ProtocolDecl*>(this)});