check.h: remove obsolete header

Since we switched from autotools to Meson in commit
94592c1406, we don't need to include
`config.h` early to properly enable large file support.  Meson passes
the required macros on the compiler command line instead of defining
them in `config.h`.

This means we can include `config.h` at any time, whenever we want to
check its macros, and there are no ordering constraints.

src/queue/Playlist.cxx

@@ -17,7 +17,6 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
-#include "config.h"
 #include "Playlist.hxx"
 #include "Listener.hxx"
 #include "PlaylistError.hxx"

src/queue/Playlist.hxx

@@ -22,6 +22,7 @@
 
 #include "SingleMode.hxx"
 #include "queue/Queue.hxx"
+#include "config.h"
 
 enum TagType : uint8_t;
 struct Tag;

src/queue/PlaylistControl.cxx

@@ -22,7 +22,6 @@
  *
  */
 
-#include "config.h"
 #include "Playlist.hxx"
 #include "PlaylistError.hxx"
 #include "player/Control.hxx"

src/queue/PlaylistEdit.cxx

@@ -23,7 +23,6 @@
  *
  */
 
-#include "config.h"
 #include "Playlist.hxx"
 #include "Listener.hxx"
 #include "PlaylistError.hxx"

src/queue/PlaylistState.cxx

@@ -22,7 +22,6 @@
  *
  */
 
-#include "config.h"
 #include "PlaylistState.hxx"
 #include "PlaylistError.hxx"
 #include "Playlist.hxx"

src/queue/PlaylistTag.cxx

@@ -23,7 +23,6 @@
  *
  */
 
-#include "config.h"
 #include "Playlist.hxx"
 #include "PlaylistError.hxx"
 #include "song/DetachedSong.hxx"

src/queue/PlaylistUpdate.cxx

@@ -17,7 +17,6 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
-#include "config.h"
 #include "Playlist.hxx"
 #include "db/Interface.hxx"
 #include "song/LightSong.hxx"

src/queue/Queue.cxx

@@ -17,7 +17,6 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
-#include "config.h"
 #include "Queue.hxx"
 #include "song/DetachedSong.hxx"
 

src/queue/QueuePrint.cxx

@@ -17,7 +17,6 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
-#include "config.h"
 #include "QueuePrint.hxx"
 #include "Queue.hxx"
 #include "song/Filter.hxx"

src/queue/QueueSave.cxx

@@ -17,7 +17,6 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
-#include "config.h"
 #include "QueueSave.hxx"
 #include "Queue.hxx"
 #include "PlaylistError.hxx"