[NFC] Delete obsolete AccessPathTy-based code

This was all deprecated in earlier commits.

Author: beccadax

include/swift/AST/Decl.h

@@ -1464,11 +1464,7 @@ class ImportDecl final : public Decl,
     private llvm::TrailingObjects<ImportDecl, ImportPath::Element> {
   friend TrailingObjects;
   friend class Decl;
-public:
-  LLVM_ATTRIBUTE_DEPRECATED(typedef ImportPath::Element AccessPathElement,
-                            "use ImportPath::Element instead");
 
-private:
   SourceLoc ImportLoc;
   SourceLoc KindLoc;
 
@@ -1506,10 +1502,6 @@ class ImportDecl final : public Decl,
                         static_cast<size_t>(Bits.ImportDecl.NumPathElements) });
   }
 
-  LLVM_ATTRIBUTE_DEPRECATED(
-    ArrayRef<ImportPath::Element> getFullAccessPath() const,
-    "use getImportPath() instead") { return getImportPath().getRaw(); }
-
   ImportPath::Module getModulePath() const {
     return getImportPath().getModulePath(getImportKind());
   }

include/swift/AST/Module.h

@@ -203,8 +203,6 @@ class ModuleDecl : public DeclContext, public TypeDecl {
   friend class DirectPrecedenceGroupLookupRequest;
 
 public:
-  LLVM_ATTRIBUTE_DEPRECATED(typedef ArrayRef<Located<Identifier>> AccessPathTy,
-                            "use ImportPath types instead");
   /// Convenience struct to keep track of a module along with its access path.
   struct alignas(uint64_t) ImportedModule {
     /// The access path from an import: `import Foo.Bar` -> `Foo.Bar`.
@@ -226,16 +224,6 @@ class ModuleDecl : public DeclContext, public TypeDecl {
     }
   };
 
-  LLVM_ATTRIBUTE_DEPRECATED(
-    static bool matchesAccessPath(AccessPathTy AccessPath, DeclName Name),
-    "use ImportPath::Access::matches() instead")
-  {
-    assert(AccessPath.size() <= 1 && "can only refer to top-level decls");
-  
-    return AccessPath.empty()
-      || DeclName(AccessPath.front().Item).matchesRef(Name);
-  }
-
   /// Arbitrarily orders ImportedModule records, for inclusion in sets and such.
   class OrderImportedModules {
   public:
@@ -757,14 +745,6 @@ class ModuleDecl : public DeclContext, public TypeDecl {
   /// imports.
   void collectLinkLibraries(LinkLibraryCallback callback) const;
 
-  /// Returns true if the two access paths contain the same chain of
-  /// identifiers.
-  ///
-  /// Source locations are ignored here.
-  LLVM_ATTRIBUTE_DEPRECATED(
-    static bool isSameAccessPath(AccessPathTy lhs, AccessPathTy rhs),
-    "use ImportPath::Access::isSameAs() instead");
-
   /// Get the path for the file that this module came from, or an empty
   /// string if this is not applicable.
   StringRef getModuleFilename() const;

lib/AST/Module.cpp

@@ -1221,17 +1221,6 @@ void ModuleDecl::getImportedModulesForLookup(
   FORWARD(getImportedModulesForLookup, (modules));
 }
 
-bool ModuleDecl::isSameAccessPath(AccessPathTy lhs, AccessPathTy rhs) {
-  using AccessPathElem = Located<Identifier>;
-  if (lhs.size() != rhs.size())
-    return false;
-  return std::equal(lhs.begin(), lhs.end(), rhs.begin(),
-                    [](const AccessPathElem &lElem,
-                       const AccessPathElem &rElem) {
-    return lElem.Item == rElem.Item;
-  });
-}
-
 ModuleDecl::ReverseFullNameIterator::ReverseFullNameIterator(
     const ModuleDecl *M) {
   assert(M);