Remove unused data.

We get TACAN, ILS, and ATC data from pydcs now. The rest of this
manually curated data is unused.

game/atcdata.py

@@ -0,0 +1,28 @@
+from __future__ import annotations
+
+from dataclasses import dataclass
+from typing import Optional
+
+from dcs.task import Modulation
+from dcs.terrain import Airport
+
+from game.radio.radios import RadioFrequency
+
+
+@dataclass
+class AtcData:
+    hf: RadioFrequency
+    vhf_fm: RadioFrequency
+    vhf_am: RadioFrequency
+    uhf: RadioFrequency
+
+    @classmethod
+    def from_pydcs(cls, airport: Airport) -> Optional[AtcData]:
+        if airport.atc_radio is None:
+            return None
+        return AtcData(
+            RadioFrequency(airport.atc_radio.hf_hz, Modulation.FM),
+            RadioFrequency(airport.atc_radio.vhf_low_hz, Modulation.FM),
+            RadioFrequency(airport.atc_radio.vhf_high_hz, Modulation.AM),
+            RadioFrequency(airport.atc_radio.uhf_hz, Modulation.AM),
+        )