set repeater/room server Lat & Lon to 0.0 as default

variants/lilygo_tbeam/platformio.ini

@@ -51,8 +51,8 @@ build_flags =
   ${LilyGo_TBeam.build_flags}
   -D DISPLAY_CLASS=SSD1306Display
   -D ADVERT_NAME='"Tbeam Repeater"'
-  -D ADVERT_LAT=-37.0
-  -D ADVERT_LON=145.0
+  -D ADVERT_LAT=0.0
+  -D ADVERT_LON=0.0
   -D ADMIN_PASSWORD='"password"'
   -D MESH_PACKET_LOGGING=1
 ;  -D MESH_DEBUG=1