Delete unused translations

ui-ngx/src/assets/locale/locale.constant-el_GR.json

@@ -2056,9 +2056,7 @@
     "name-required": "Απαιτείται Όνομα",
     "configuration": "Διαμόρφωση",
     "schedule": "Πρόγραμμα",
-    "start": "Έναρξη",
-    "date": "Ημερομηνία",
-    "time": "Ώρα",
+    "start-time": "Ώρα έναρξης",
     "repeat": "Επανάληψη",
     "repeats": "Επαναλήψεις",
     "daily": "Καθημερινά",

ui-ngx/src/assets/locale/locale.constant-uk_UA.json

@@ -1850,9 +1850,7 @@
         "name-required": "Необхідно задати ім'я",
         "configuration": "Конфігурація",
         "schedule": "Розклад",
-        "start": "Початок",
-        "date": "Дата",
-        "time": "Час",
+        "start-time": "Початок",
         "repeat": "Повтор",
         "repeats": "Повтори",
         "daily": "Щодня",