Disable ui_fsk_rx (#2337)

* removing ui_fsk_rx.cpp from targets

* removing unneeded ui_fsk_rx.hpp from includes

* deleting the now unused ui_fsk_rx.cpp and hpp files

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Co-authored-by: gullradriel <gullradriel@no-mail.com>

firmware/application/ui_navigation.cpp

@@ -43,7 +43,6 @@
 #include "ui_flash_utility.hpp"
 #include "ui_font_fixed_8x16.hpp"
 #include "ui_freqman.hpp"
-#include "ui_fsk_rx.hpp"
 #include "ui_iq_trim.hpp"
 #include "ui_level.hpp"
 #include "ui_looking_glass_app.hpp"