Everywhere: Remove the AK:: qualifier from Stream usages

Author: https://github.com/timschumi
Commit: 43f98ac6e1
Pull-request: https://github.com/SerenityOS/serenity/pull/17406
Reviewed-by: https://github.com/linusg

Userland/Libraries/LibWebView/RequestServerAdapter.cpp

@@ -63,7 +63,7 @@ bool RequestServerRequestAdapter::stop()
     return m_request->stop();
 }
 
-void RequestServerRequestAdapter::stream_into(AK::Stream& stream)
+void RequestServerRequestAdapter::stream_into(Stream& stream)
 {
     m_request->stream_into(stream);
 }