Add setting to disable database use.

backend/src/api/fee-api.ts

@@ -1,5 +1,4 @@
 import projectedBlocks from './mempool-blocks';
-import { DB } from '../database';
 
 class FeeApi {
   constructor() { }
@@ -28,20 +27,6 @@ class FeeApi {
       'hourFee': thirdMedianFee,
     };
   }
-
-  public async $getTransactionsForBlock(blockHeight: number): Promise<any[]> {
-    try {
-      const connection = await DB.pool.getConnection();
-      const query = `SELECT feePerVsize AS fpv FROM transactions WHERE blockheight = ? ORDER BY feePerVsize ASC`;
-      const [rows] = await connection.query<any>(query, [blockHeight]);
-      connection.release();
-      return rows;
-    } catch (e) {
-      console.log('$getTransactionsForBlock() error', e);
-      return [];
-    }
-  }
-
 }
 
 export default new FeeApi();