Disable ctrlc

All calls to `util_progress` were removed from the frontend, resulting ctrl+c becoming unresponsive on win32.

eg you can't kill this with ctrl+c

```d
void bun() {}

int fun()
{
    foreach(i; 0..0x1000000)
        bun();
    return 1;
}

void main()
{
    enum x = fun();
}
```