Remove menu and status bars in TinyMCE 4

If you want a completely clean text box, you could disable all the bars, including de "toolbar":

tinymce.init({
            selector:'textarea',
            branding: false,
            menubar:false,
            statusbar: false,
            toolbar: false,
        });

So, It is clearly metioned in their docs that to make the values to false.

    tinymce.init({
    menubar: false,
    branding: false,
    statusbar: false,
   })

In the latest update to v5 You can display menubar as such

    tinymce.init({
     menu: {
      edit: { title: 'Edit', items: 'undo redo | cut copy paste pastetext | selectall searchreplace' },
      insert: { title: 'Insert', items: 'image link charmap pagebreak' },
      format: { title: 'Format', items: 'bold italic underline strikethrough superscript subscript | formats | removeformat' },
      table: { title: 'Table', items: 'inserttable tableprops deletetable | cell row column' }
    },
    menubar: 'edit insert format table',
});

see https://www.tiny.cloud/docs/ for more details

If you want to remove entire Menu bar from top

tinymce.init({
    menubar: false,

});

But if you want Custom menubar with some submenu

tinymce.init({
    menu: {
        file: {title: 'File', items: 'newdocument'},
        edit: {title: 'Edit', items: 'undo redo | cut copy paste pastetext | selectall'},
        insert: {title: 'Insert', items: 'link media | template hr'},
        view: {title: 'View', items: 'visualaid'},
        format: {title: 'Format', items: 'bold italic underline strikethrough superscript subscript | formats | removeformat'},
        table: {title: 'Table', items: 'inserttable tableprops deletetable | cell row column'},
        tools: {title: 'Tools', items: 'spellchecker code'}
    }
});

see TinyMCE for more help.

I looked at the source and it was fairly obvious:

tinyMCE.init({
    menubar:false,
    statusbar: false,
        //etc
})

This removes both.

You can also customise what parts of the default menu bar are visible by specifying a string of enabled menus - e.g. menubar: 'file edit'

You can define your own menus like this:

menu : {    
    test: {title: 'Test Menu', items: 'newdocument'} 
},
menubar: 'test'