[bcl tests] do not attempt to delete non-existing files
authorBernhard Urban <bernhard.urban@xamarin.com>
Mon, 19 Jun 2017 14:04:09 +0000 (16:04 +0200)
committerBernhard Urban <bernhard.urban@xamarin.com>
Tue, 20 Jun 2017 14:36:28 +0000 (16:36 +0200)
commit68f5463685eb96f6e1a5cbd575119791d3f079eb
tree8fd1353d807a61677e5136d15c2e007a56f56e9d
parenta08574bf9e4f27e3187a3f6edf7d99d32c28ad6c
[bcl tests] do not attempt to delete non-existing files

This fixes an issue we see on the BCL test suite when run in the context
of Xamarin Android:

```
I/mono-stdout( 2534):     Certificate1 [FAIL] : TearDown : System.UnauthorizedAccessException : Access to the path "temp.b64" is denied.
```

It seems like those files aren't generated anymore.  Not sure why this
starts to be a problem now.
mcs/class/corlib/Test/System.Security.Cryptography.X509Certificates/X509CapiTest.cs
mcs/class/corlib/Test/System.Security.Cryptography.X509Certificates/X509CertificateTest.cs