Change Logger.dev calls to Logger.debug

Logger.dev is kind of in a weird spot where it doesn't fit into the
standard log level.  It is called directly by some code and it only
checks whether a property is set (which comes from an env var) before
deciding to print out.

This standardizes on `debug` by changing the dev calls to debug. Also
removes the now unused code.

server/Logger.js

@@ -5,7 +5,6 @@ class Logger {
   constructor() {
     this.isDev = process.env.NODE_ENV !== 'production'
     this.logLevel = !this.isDev ? LogLevel.INFO : LogLevel.TRACE
-    this.hideDevLogs = process.env.HIDE_DEV_LOGS === undefined ? !this.isDev : process.env.HIDE_DEV_LOGS === '1'
     this.socketListeners = []
 
     this.logManager = null
@@ -88,15 +87,6 @@ class Logger {
     this.debug(`Set Log Level to ${this.levelString}`)
   }
 
-  /**
-   * Only to console and only for development
-   * @param  {...any} args
-   */
-  dev(...args) {
-    if (this.hideDevLogs) return
-    console.log(`[${this.timestamp}] DEV:`, ...args)
-  }
-
   trace(...args) {
     if (this.logLevel > LogLevel.TRACE) return
     console.trace(`[${this.timestamp}] TRACE:`, ...args)