Fix linting errors

src/api/controllers/collect.ts

@@ -21,7 +21,7 @@
 import * as express from "express";
 
 export class CollectCtrl {
-    static write(req: express.Request, res: express.Response, next: express.NextFunction) {
+    public static write(req: express.Request, res: express.Response, next: express.NextFunction) {
         if ("_id" in req.body) {
             res.status(400)
                 .json({ message: "Property named \"_id\" is protected." });

src/api/controllers/data.ts

@@ -21,7 +21,7 @@
 import * as express from "express";
 
 export class DataCtrl {
-    static read(req: express.Request, res: express.Response, next: express.NextFunction) {
+    public static read(req: express.Request, res: express.Response, next: express.NextFunction) {
         let metrics = req.query.metrics.split(",");
         let dimensions = req.query.dimensions.split(",");
 

src/boot.ts

@@ -21,7 +21,6 @@
 
 // external libraries
 import express = require("express");
-import path = require("path");
 const osprey = require("osprey");
 const ramlParser = require("raml-parser");