fix: removed unused file

src/main/java/eirb/pg203/weather/utils/Cache.java

@@ -1,53 +0,0 @@
-package eirb.pg203.weather.utils;
-
-import java.util.HashMap;
-
-import org.json.JSONArray;
-import org.json.JSONObject;
-
-class Cache {
-	HashMap<String, String> hashMap;
-
-	public Cache() {
-		this.hashMap = new HashMap<>();
-	}
-
-	public boolean has(String key) {
-		return this.hashMap.get(key) == null;
-	}
-
-	public String get(String key) {
-		return this.hashMap.get(key);
-	}
-
-	public void set(String key, String value) {
-		this.hashMap.put(key, value);
-	}
-
-	public void flush() {
-		this.hashMap = new HashMap<>();
-	}
-
-	public void fromString(String input) {
-		JSONArray data = new JSONArray(input);
-
-		for (int i = 0 ; i < data.length() ; ++i)
-		{
-			JSONObject entry = data.getJSONObject(i);
-			String key = entry.getString("key");
-			String value = entry.getString("value");
-
-			this.hashMap.put(key, value);
-		}
-	}
-
-	public String exportString() {
-		JSONArray data = new JSONArray();
-
-		for (String key: this.hashMap.keySet())
-			data.put(this.hashMap.get(key));
-
-		return data.toString();
-	}
-}
-