stdlib: remove _extractOrCopyToContiguousArray()

Author: gribozavr

stdlib/public/core/Arrays.swift.gyb

@@ -936,7 +936,7 @@ extension ${Self} : ArrayLiteralConvertible {
   ///
   /// - Parameter elements: A variadic list of elements of the new array.
   public init(arrayLiteral elements: Element...) {
-    self.init(_buffer: _extractOrCopyToContiguousArray(elements._buffer)._buffer)
+    self.init(_buffer: ContiguousArray(elements)._buffer)
   }
 %end
 }
@@ -1428,7 +1428,10 @@ extension ${Self} : RangeReplaceableCollection, _ArrayProtocol {
   }
 
   public func _copyToContiguousArray() -> ContiguousArray<Element> {
-    return _extractOrCopyToContiguousArray(self._buffer)
+    if let n = _buffer.requestNativeBuffer() {
+      return ContiguousArray(_buffer: n)
+    }
+    return _copyCollectionToContiguousArray(_buffer)
   }
 }
 
@@ -1488,10 +1491,9 @@ extension ${Self} {
     if _fastPath(p != nil || isEmpty) {
       return (_owner, UnsafePointer(p))
     }
-    let n = _extractOrCopyToNativeArrayBuffer(self._buffer)
+    let n = ContiguousArray(self._buffer)._buffer
     return (n.owner, UnsafePointer(n.firstElementAddress))
   }
-
 }
 
 extension ${Self} {
@@ -1977,29 +1979,6 @@ internal func _arrayReserve<_Buffer>(
   _arrayOutOfPlaceUpdate(&buffer, &newBuffer, count, 0, _IgnorePointer())
 }
 
-internal func _extractOrCopyToContiguousArray<Buffer>(
-  _ source: Buffer
-) -> ContiguousArray<Buffer.Iterator.Element>
-  where
-  Buffer : _ArrayBufferProtocol,
-  Buffer.Iterator.Element == Buffer.Element {
-
-  if let n = source.requestNativeBuffer() {
-    return ContiguousArray(_buffer: n)
-  }
-  return _copyCollectionToContiguousArray(source)
-}
-
-internal func _extractOrCopyToNativeArrayBuffer<Buffer>(
-  _ source: Buffer
-) -> _ContiguousArrayBuffer<Buffer.Iterator.Element>
-  where
-  Buffer : _ArrayBufferProtocol,
-  Buffer.Iterator.Element == Buffer.Element {
-
-  return _extractOrCopyToContiguousArray(source)._buffer
-}
-
 /// Append items from `newItems` to `buffer`.
 internal func _arrayAppendSequence<Buffer, S>(
   _ buffer: inout Buffer, _ newItems: S