Remove redundant initializer from HTTPResponseCompressor in next major version

[dimitribouniol]

As mentioned, public convenience init(initialByteBufferCapacity: Int) is now redundant, but has been left in purely for backwards compatibility when referring to the initializer directly rather than calling it, and can be removed in a future major version:

swift-nio-extras/Sources/NIOHTTPCompression/HTTPResponseCompressor.swift

Lines 132 to 137 in d1ead62

	/// Initialize a ``HTTPResponseCompressor``.
	/// - Parameter initialByteBufferCapacity: Initial size of buffer to allocate when hander is first added.
	public convenience init(initialByteBufferCapacity: Int = 1024) {
	// TODO: This version is kept around for backwards compatibility and should be merged with the signature below in the next major version: https://github.com/apple/swift-nio-extras/issues/226
	self.init(initialByteBufferCapacity: initialByteBufferCapacity, responseCompressionPredicate: nil)
	}