Remove deprecated `parseSourceFile/String()` overloads.

mlir/include/mlir/Parser/Parser.h

inline OwningOpRef<ContainerOpT> parseSourceString(llvm::StringRef sourceStr,
   LocationAttr sourceFileLoc;
   Block block;
   if (failed(parseSourceString(sourceStr, &block, context, &sourceFileLoc)))
     return OwningOpRef<ContainerOpT>();
   return detail::constructContainerOpForParserIfNecessary<ContainerOpT>(
       &block, context, sourceFileLoc);
 }
 
-/// TODO: These methods are deprecated in favor of the above template versions.
-/// They should be removed when usages have been updated.
-[[deprecated("use parseSourceFile<ModuleOp>")]] inline OwningOpRef<ModuleOp>
-parseSourceFile(const llvm::SourceMgr &sourceMgr, MLIRContext *context) {
-  return parseSourceFile<ModuleOp>(sourceMgr, context);
-}
-[[deprecated("use parseSourceFile<ModuleOp>")]] inline OwningOpRef<ModuleOp>
-parseSourceFile(llvm::StringRef filename, MLIRContext *context) {
-  return parseSourceFile<ModuleOp>(filename, context);
-}
-[[deprecated("use parseSourceFile<ModuleOp>")]] inline OwningOpRef<ModuleOp>
-parseSourceFile(llvm::StringRef filename, llvm::SourceMgr &sourceMgr,
-                MLIRContext *context) {
-  return parseSourceFile<ModuleOp>(filename, sourceMgr, context);
-}
-[[deprecated("use parseSourceString<ModuleOp>")]] inline OwningOpRef<ModuleOp>
-parseSourceString(llvm::StringRef moduleStr, MLIRContext *context) {
-  return parseSourceString<ModuleOp>(moduleStr, context);
-}
-
 /// This parses a single MLIR attribute to an MLIR context if it was valid.  If
 /// not, an error message is emitted through a new SourceMgrDiagnosticHandler
 /// constructed from a new SourceMgr with a single a MemoryBuffer wrapping
 /// `attrStr`. If the passed `attrStr` has additional tokens that were not part
 /// of the type, an error is emitted.
 // TODO: Improve diagnostic reporting.
 Attribute parseAttribute(llvm::StringRef attrStr, MLIRContext *context);
 Attribute parseAttribute(llvm::StringRef attrStr, Type type);