Remove some dead code from PrintAST

Author: AnthonyLatsis

lib/AST/ASTPrinter.cpp

@@ -801,7 +801,6 @@ class PrintAST : public ASTVisitor<PrintAST> {
                                               Decl *attachingTo);
   void printWhereClauseFromRequirementSignature(ProtocolDecl *proto,
                                                 Decl *attachingTo);
-  void printTrailingWhereClause(TrailingWhereClause *whereClause);
 
   void printGenericSignature(GenericSignature genericSig,
                              unsigned flags);
@@ -1359,18 +1358,6 @@ void PrintAST::printWhereClauseFromRequirementSignature(ProtocolDecl *proto,
       });
 }
 
-void PrintAST::printTrailingWhereClause(TrailingWhereClause *whereClause) {
-  Printer << " " << tok::kw_where << " ";
-  interleave(
-      whereClause->getRequirements(),
-      [&](const RequirementRepr &req) {
-        Printer.callPrintStructurePre(PrintStructureKind::GenericRequirement);
-        req.print(Printer);
-        Printer.printStructurePost(PrintStructureKind::GenericRequirement);
-      },
-      [&] { Printer << ", "; });
-}
-
 /// A helper function to return the depth of a requirement.
 static unsigned getDepthOfRequirement(const Requirement &req) {
   switch (req.getKind()) {