Fix a bug with Vault Economy not found in loading process.

If plugin that enables Vault do it after BentoBox, then a lot of addons disabled their economy settings. This should fix it.

src/main/java/world/bentobox/biomes/BiomesAddon.java

@@ -174,7 +174,6 @@ private void findVaultPlugin()
         }
         else
         {
-            this.economyProvided = true;
             this.vaultHook = vault.get();
         }
     }
@@ -335,7 +334,7 @@ public Settings getSettings()
      */
     public boolean isEconomyProvided()
     {
-        return this.economyProvided;
+        return this.vaultHook != null && this.vaultHook.hook();
     }
 
 
@@ -409,11 +408,6 @@ public boolean isGreenhousesProvided()
      */
     private Settings settings;
 
-    /**
-     * This boolean indicate if economy is enabled.
-     */
-    private boolean economyProvided;
-
     /**
      * VaultHook that process economy.
      */