tests: Do not remove image file on error in pata_test

The image file can be useful in debugging an issue when the test fails.

Signed-off-by: Glenn Washburn <development@efficientek.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>

tests/pata_test.in

@@ -47,7 +47,6 @@ tar cf "$imgfile" "$outfile"
 
 v=$(echo "nativedisk; source '($indisk)/$outfile';" | "${grubshell}" --qemu-opts="-$disk $imgfile")
 if [ "$v" != "Hello World" ]; then
-   rm "$imgfile"
    rm "$outfile"
    exit 1
 fi