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/playlist/plugins/AsxPlaylistPlugin.cxx

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

src/playlist/plugins/CuePlaylistPlugin.cxx

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

src/playlist/plugins/EmbeddedCuePlaylistPlugin.cxx

@@ -23,7 +23,6 @@
  * tag of a music file.
  */
 
-#include "config.h"
 #include "EmbeddedCuePlaylistPlugin.hxx"
 #include "../PlaylistPlugin.hxx"
 #include "../SongEnumerator.hxx"

src/playlist/plugins/ExtM3uPlaylistPlugin.cxx

@@ -17,7 +17,6 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
-#include "config.h"
 #include "ExtM3uPlaylistPlugin.hxx"
 #include "../PlaylistPlugin.hxx"
 #include "../SongEnumerator.hxx"

src/playlist/plugins/FlacPlaylistPlugin.cxx

@@ -23,7 +23,6 @@
  * tag of a music file.
  */
 
-#include "config.h"
 #include "FlacPlaylistPlugin.hxx"
 #include "../PlaylistPlugin.hxx"
 #include "../SongEnumerator.hxx"

src/playlist/plugins/M3uPlaylistPlugin.cxx

@@ -17,7 +17,6 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
-#include "config.h"
 #include "M3uPlaylistPlugin.hxx"
 #include "../PlaylistPlugin.hxx"
 #include "../SongEnumerator.hxx"

src/playlist/plugins/PlsPlaylistPlugin.cxx

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

src/playlist/plugins/RssPlaylistPlugin.cxx

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

src/playlist/plugins/SoundCloudPlaylistPlugin.cxx

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

src/playlist/plugins/XspfPlaylistPlugin.cxx

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