refactor: remove DLD variant awards (80m, 40m, CW)

Removed the following DLD award variants:
- dld-80m.json
- dld-40m.json
- dld-cw.json

Kept dld-80m-cw.json as it represents a more specific combination.

Co-Authored-By: Claude <noreply@anthropic.com>

award-definitions/dld-40m.json

@@ -1,19 +0,0 @@
-{
-  "id": "dld-40m",
-  "name": "DLD 40m",
-  "description": "Confirm 100 unique DOKs on 40m",
-  "caption": "Contact and confirm stations with 100 unique DOKs (DARC Ortsverband Kennung) on the 40m band. Only DCL-confirmed QSOs with valid DOK information on 40m count toward this award.",
-  "category": "darc",
-  "rules": {
-    "type": "dok",
-    "target": 100,
-    "confirmationType": "dcl",
-    "displayField": "darcDok",
-    "filters": {
-      "operator": "AND",
-      "filters": [
-        { "field": "band", "operator": "eq", "value": "40m" }
-      ]
-    }
-  }
-}

award-definitions/dld-80m.json

@@ -1,19 +0,0 @@
-{
-  "id": "dld-80m",
-  "name": "DLD 80m",
-  "description": "Confirm 100 unique DOKs on 80m",
-  "caption": "Contact and confirm stations with 100 unique DOKs (DARC Ortsverband Kennung) on the 80m band. Only DCL-confirmed QSOs with valid DOK information on 80m count toward this award.",
-  "category": "darc",
-  "rules": {
-    "type": "dok",
-    "target": 100,
-    "confirmationType": "dcl",
-    "displayField": "darcDok",
-    "filters": {
-      "operator": "AND",
-      "filters": [
-        { "field": "band", "operator": "eq", "value": "80m" }
-      ]
-    }
-  }
-}

award-definitions/dld-cw.json

@@ -1,19 +0,0 @@
-{
-  "id": "dld-cw",
-  "name": "DLD CW",
-  "description": "Confirm 100 unique DOKs using CW mode",
-  "caption": "Contact and confirm stations with 100 unique DOKs (DARC Ortsverband Kennung) using CW (Morse code). Each unique DOK on CW counts separately. Only DCL-confirmed QSOs with valid DOK information count toward this award.",
-  "category": "darc",
-  "rules": {
-    "type": "dok",
-    "target": 100,
-    "confirmationType": "dcl",
-    "displayField": "darcDok",
-    "filters": {
-      "operator": "AND",
-      "filters": [
-        { "field": "mode", "operator": "eq", "value": "CW" }
-      ]
-    }
-  }
-}

src/backend/services/awards.service.js

@@ -27,9 +27,6 @@ function loadAwardDefinitions() {
       'sat-rs44.json',
       'special-stations.json',
       'dld.json',
-      'dld-80m.json',
-      'dld-40m.json',
-      'dld-cw.json',
       'dld-80m-cw.json',
       '73-on-73.json',
     ];