Remove title from toolbar to prevent displaying it when hover over (X),(<--) and sidenav icon

Steps to reproduce:

1. go to channel settings page
2. Hover over (X) icon .Notice it will show "Settings of 'Hippo Acceptance Project' tooltip

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1. go to menu editor
2. Hover over back button.Notice it will show "Edit Menu" tooltip

Please check other areas as well.Better is to remove title label