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/encoder/plugins/FlacEncoderPlugin.cxx

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

src/encoder/plugins/LameEncoderPlugin.cxx

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

src/encoder/plugins/NullEncoderPlugin.cxx

@@ -17,7 +17,6 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
-#include "config.h"
 #include "NullEncoderPlugin.hxx"
 #include "../EncoderAPI.hxx"
 #include "util/DynamicFifoBuffer.hxx"

src/encoder/plugins/OggEncoder.hxx

@@ -20,7 +20,6 @@
 #ifndef MPD_OGG_ENCODER_HXX
 #define MPD_OGG_ENCODER_HXX
 
-#include "config.h"
 #include "../EncoderAPI.hxx"
 #include "lib/xiph/OggStreamState.hxx"
 #include "lib/xiph/OggPage.hxx"

src/encoder/plugins/OpusEncoderPlugin.cxx

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

src/encoder/plugins/ShineEncoderPlugin.cxx

@@ -18,7 +18,6 @@
  */
 
 #include "ShineEncoderPlugin.hxx"
-#include "config.h"
 #include "../EncoderAPI.hxx"
 #include "AudioFormat.hxx"
 #include "config/Domain.hxx"

src/encoder/plugins/TwolameEncoderPlugin.cxx

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

src/encoder/plugins/VorbisEncoderPlugin.cxx

@@ -17,7 +17,6 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
-#include "config.h"
 #include "VorbisEncoderPlugin.hxx"
 #include "OggEncoder.hxx"
 #include "lib/xiph/VorbisComment.hxx"

src/encoder/plugins/WaveEncoderPlugin.cxx

@@ -17,7 +17,6 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
-#include "config.h"
 #include "WaveEncoderPlugin.hxx"
 #include "../EncoderAPI.hxx"
 #include "system/ByteOrder.hxx"