How to replace colon or dash with empty string if there are 2 characters before them

I need a regex to replace strings like this:

aa:bb:c:  //to be aabbc:
or 
aa-bb-c-  //to be aabbc-

I can do this by this code
text.replace(/.{2}[:-]/g, (match) => match.substring(0,2));

I am asking if this could be done by regex only without using replacer function like
text.replace(regex, "");

>Solution :

You can replace with regex capture group using (), which $1 means the first match group

text.replace(/(.{2})[:-]/g, "$1")

Refrence:
https://developer.mozilla.org/zh-TW/docs/Web/JavaScript/Reference/Global_Objects/RegExp#using_a_regular_expression_to_change_data_format