Remove duplicate rows.

variants/heltec_vision_master_e213/platformio.ini

@@ -49,7 +49,6 @@ build_src_filter = ${Heltec_Vision_Master_E213_base.build_src_filter}
   +<helpers/ui/E213Display.cpp>
   +<helpers/esp32/*.cpp>
   +<../examples/companion_radio/*.cpp>
-  +<../examples/companion_radio/*.cpp>
   +<../examples/companion_radio/ui-new/*.cpp>
 lib_deps =
   ${Heltec_Vision_Master_E213_base.lib_deps}