Do not automatically open devtools

Remove the behavior of automatically opening developer tools when
launched with --dev command line switch. As --hide-devtools switch is
now unused, remove it as well.

electron/src/config.ts

@@ -18,6 +18,5 @@ export const pageUrl = app.isPackaged
 
 export const switches = {
     dev: app.commandLine.hasSwitch("dev"),
-    hideDevtools: app.commandLine.hasSwitch("hide-devtools"),
     safeMode: app.commandLine.hasSwitch("safe-mode"),
 };

electron/src/index.ts

@@ -47,10 +47,6 @@ function createWindow() {
 
     window.on("ready-to-show", () => {
         window.show();
-
-        if (switches.dev && !switches.hideDevtools) {
-            window.webContents.openDevTools();
-        }
     });
 
     ipc.install(window);