I wanted to exclude the string "exit" in the text below with Regex. 

```
cnt number: 1452365877

cnt exit no : 145263888

CCS No : BBSD145222

```

It should become like this:

```
cnt number: 1452365877

cnt  no : 145263888

CCS No : BBSD145222

```

So, how can I do that? Any help would be appreciated.