test: Remove use of defaultOpts

git-svn-id: https://llvm.org/svn/llvm-project/polly/trunk@196826 91177308-0d34-0410-b5e6-96231b3b80d8
ScopValidator: smax expressions are no parameters

This fixes PR18155 which is a regression introduced in 152913.

git-svn-id: https://llvm.org/svn/llvm-project/polly/trunk@196827 91177308-0d34-0410-b5e6-96231b3b80d8