Hi @twong,
The correct attribute name should be tm1-hide-label. And it should be written as tm1-hide-label="true"
Though this is only applicable to specific charts only.
If the above attribute does not work, the other way to go about it is through the tm1-options-override. And this is the applicable options:
tm1-options-override="{chart:{showXAxis: false}}"
Or if you want to hide the Y axis values as well:
tm1-options-override="{chart:{showXAxis: false, showYAxis: false}}"
Here are other articles you can look at that is helpful too:
Cheers!
Paul