[llvm][NFC] Remove deprecated Alignment::None()

llvm/include/llvm/Support/Alignment.h

explicit Align(uint64_t Value) {
     ShiftValue = Log2_64(Value);
     assert(ShiftValue < 64 && "Broken invariant");
   }
 
   /// This is a hole in the type system and should not be abused.
   /// Needed to interact with C for instance.
   uint64_t value() const { return uint64_t(1) << ShiftValue; }
 
-  /// Returns a default constructed Align which corresponds to no alignment.
-  /// It was decided to deprecate Align::None because it's too close to
-  /// llvm::None which can be used to initialize `MaybeAlign`.
-  /// MaybeAlign = llvm::None means unspecified alignment,
-  /// Align = Align::None() means alignment of one byte.
-  LLVM_ATTRIBUTE_DEPRECATED(constexpr static const Align None(),
-                            "Use Align() or Align(1) instead") {
-    return Align();
-  }
-
   /// Allow constructions of constexpr Align.
   template <size_t kValue> constexpr static LogValue Constant() {
     return LogValue{static_cast<uint8_t>(CTLog2<kValue>())};
   }
 
   /// Allow constructions of constexpr Align from types.
   /// Compile time equivalent to Align(alignof(T)).
   template <typename T> constexpr static LogValue Of() {