[Issue 18906] Template specialisations should not be stripped if they're not called

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18906

Nathan S. <n8sh.secondary at hotmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |n8sh.secondary at hotmail.com

--- Comment #1 from Nathan S. <n8sh.secondary at hotmail.com> ---
```
  int t(T : int)(int x)
  {
    return x * 2;
  }
```

What is the point of the template?

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