AK: Move bit streams from LibCore

Author: https://github.com/timschumi
Commit: 2470dd3bb5
Pull-request: https://github.com/SerenityOS/serenity/pull/17173
Reviewed-by: https://github.com/ADKaster ✅
Reviewed-by: https://github.com/alimpfard

Userland/Libraries/LibAudio/FlacLoader.h

@@ -8,17 +8,15 @@
 
 #include "FlacTypes.h"
 #include "Loader.h"
+#include <AK/BitStream.h>
 #include <AK/Error.h>
 #include <AK/Span.h>
 #include <AK/Types.h>
-#include <LibCore/BitStream.h>
 #include <LibCore/MemoryStream.h>
 #include <LibCore/Stream.h>
 
 namespace Audio {
 
-using Core::Stream::BigEndianInputBitStream;
-
 // Experimentally determined to be a decent buffer size on i686:
 // 4K (the default) is slightly worse, and 64K is much worse.
 // At sufficiently large buffer sizes, the advantage of infrequent read() calls is outweighed by the memmove() overhead.