[clang][dataflow] Remove deprecated `Strict` accessors.

clang/include/clang/Analysis/FlowSensitive/DataflowEnvironment.h

public:
   /// environment.
   ///
   /// Requirements:
   ///
   ///  `E` must not be assigned a storage location in the environment.
   ///  `E` must be a glvalue or a `BuiltinType::BuiltinFn`
   void setStorageLocation(const Expr &E, StorageLocation &Loc);
 
-  /// Deprecated synonym for `setStorageLocation()`.
-  void setStorageLocationStrict(const Expr &E, StorageLocation &Loc) {
-    setStorageLocation(E, Loc);
-  }
-
   /// Returns the storage location assigned to the glvalue `E` in the
   /// environment, or null if `E` isn't assigned a storage location in the
   /// environment.
   ///
   /// If the storage location for `E` is associated with a
   /// `ReferenceValue RefVal`, returns `RefVal.getReferentLoc()` instead.
   ///
   /// Requirements:
   ///  `E` must be a glvalue or a `BuiltinType::BuiltinFn`
   StorageLocation *getStorageLocation(const Expr &E) const;
 
-  /// Deprecated synonym for `getStorageLocation()`.
-  StorageLocation *getStorageLocationStrict(const Expr &E) const {
-    return getStorageLocation(E);
-  }
-
   /// Returns the storage location assigned to the `this` pointee in the
   /// environment or null if the `this` pointee has no assigned storage location
   /// in the environment.
   AggregateStorageLocation *getThisPointeeStorageLocation() const;
 
   /// Returns the location of the result object for a record-type prvalue.
   ///
   /// In C++, prvalues of record type serve only a limited purpose: They can
public:
   ///  `E` must be a prvalue
   ///  `Val` must not be a `ReferenceValue`
   ///  If `Val` is a `StructValue`, its `AggregateStorageLocation` must be the
   ///  same as that of any `StructValue` that has already been associated with
   ///  `E`. This is to guarantee that the result object initialized by a prvalue
   ///  `StructValue` has a durable storage location.
   void setValue(const Expr &E, Value &Val);
 
-  /// Deprecated synonym for `setValue()`.
-  void setValueStrict(const Expr &E, Value &Val) { setValue(E, Val); }
-
   /// Returns the value assigned to `Loc` in the environment or null if `Loc`
   /// isn't assigned a value in the environment.
   Value *getValue(const StorageLocation &Loc) const;
 
   /// Equivalent to `getValue(getStorageLocation(D))` if `D` is assigned a
   /// storage location in the environment, otherwise returns null.
   Value *getValue(const ValueDecl &D) const;