Remove form factor checks

It is up to the user to attach the specified WiFi module to the
board in hand. Do not make any assumption about used serial pins
or for factor of the board used.

Fixes #61

Author: Seppo Takalo

main.cpp

@@ -28,16 +28,7 @@ OdinWiFiInterface wifi;
 #include "RTWInterface.h"
 RTWInterface wifi;
 
-#else
-#if MBED_CONF_APP_WIFI_SHIELD == WIFI_ESP8266
-#if !TARGET_FF_MORPHO
-#error [NOT_SUPPORTED] Only Morpho form factor devices are supported for this shield at this time
-#endif // !TARGET_FF_MORPHO
-#else
-#if !TARGET_FF_ARDUINO
-#error [NOT_SUPPORTED] Only Arduino form factor devices are supported for this shield at this time
-#endif // !TARGET_FF_ARDUINO
-#endif // MBED_CONF_APP_WIFI_SHIELD != WIFI_ESP8266
+#else // External WiFi modules
 
 #if MBED_CONF_APP_WIFI_SHIELD == WIFI_ESP8266
 #include "ESP8266Interface.h"
@@ -47,7 +38,7 @@ ESP8266Interface wifi(MBED_CONF_APP_WIFI_TX, MBED_CONF_APP_WIFI_RX);
 SpwfSAInterface wifi(MBED_CONF_APP_WIFI_TX, MBED_CONF_APP_WIFI_RX);
 #endif // MBED_CONF_APP_WIFI_SHIELD == WIFI_IDW01M1
 
-#endif // TARGET_UBLOX_EVK_ODIN_W2
+#endif
 
 const char *sec2str(nsapi_security_t sec)
 {