cleanup: Remove apidsl for everything except the public API.

Apidsl is not powerful enough to express all the things we need and
doesn't know how `#include` works. The generated headers are more complex
than they should be.

CMakeLists.txt

@@ -161,7 +161,6 @@ set(toxcore_PKGCONFIG_REQUIRES)
 
 # LAYER 1: Crypto core
 # --------------------
-apidsl(toxcore/crypto_core.api.h)
 set(toxcore_SOURCES ${toxcore_SOURCES}
   toxcore/ccompat.h
   toxcore/crypto_core.c
@@ -189,9 +188,6 @@ set(toxcore_SOURCES ${toxcore_SOURCES}
 
 # LAYER 3: Distributed Hash Table
 # -------------------------------
-apidsl(toxcore/LAN_discovery.api.h)
-apidsl(toxcore/ping.api.h)
-apidsl(toxcore/ping_array.api.h)
 set(toxcore_SOURCES ${toxcore_SOURCES}
   toxcore/DHT.c
   toxcore/DHT.h

toxcore/DHT.h

@@ -211,7 +211,6 @@ typedef struct Shared_Keys {
 typedef int cryptopacket_handler_cb(void *object, IP_Port ip_port, const uint8_t *source_pubkey,
                                     const uint8_t *data, uint16_t len, void *userdata);
 
-#define DHT_DEFINED
 typedef struct DHT DHT;
 
 const uint8_t *dht_get_self_public_key(const DHT *dht);

toxcore/LAN_discovery.h

@@ -11,16 +11,6 @@
 
 #include "DHT.h"
 
-#ifndef DHT_DEFINED
-#define DHT_DEFINED
-typedef struct DHT DHT;
-#endif /* DHT_DEFINED */
-
-#ifndef IP_DEFINED
-#define IP_DEFINED
-typedef struct IP IP;
-#endif /* IP_DEFINED */
-
 /**
  * Interval in seconds between LAN discovery packet sending.
  */