shell32/tests: Fix test on temp paths that have a different long form. (try 2)

[Nicolas Le Cam]

Hi,

Try 2: Remove unused variable declaration.

This is an attempt to fix failure introduced by commit
7db6d5e3be62b5303ebb17fe16168b1588390272.

Before this patch the shell link was pointing to a short path containing
double backslashes, and in this particular case saving the shell link
doesn't expend the path to its long form (test added in an other patch)
and StrCmpPath is handling backslashes differences.

Now that one of the backslashes is gone, path is expanded on some
systems (basically Win2K and WinXP) and this case wasn't handled.

Test is passing on other boxes because temp path has identical short and
long form.

--
Nicolas Le Cam