Disable tooltip on hover

[mahmoud-hosny92]

I'm submitting a...

[ x ] Bug report
[ ] Feature request
[ ] Documentation issue or request

Current behavior

The icon name appears in a tooltip when it's on hover. If I've a custom tooltip on the icon, then two tooltips will appear.

Expected behavior

Disable the icon name tooltip

Minimal reproduction of the problem with instructions

We are using icons with the following components:

1. icon inside ix-event-list-item
2. ix-icon-button
3. ix-button with icon
4. ix-dropdown-button
5. icon inside ix-input-group
6. ix-dropdown-item with icon

What is the motivation / use case for changing the behavior?

I believe it's a bug.

[nuke-ellington]

We will remove title tags from all SVGs @silviowolf

[nuke-ellington]

Closes siemens/ix#903

[silviowolf]

title attributes removed, pull requested #49