& Revert "[Dexter] Fix incorrect substitution errors in clang-cl builder" This reverts commits262520a3c5, and0b72b71cd3. Failures occurred on two buildbots, the SIE buildbot: https://lab.llvm.org/buildbot/#/builders/216/builds/26006 And the green dragon buildbot: https://green.lab.llvm.org/green/view/LLDB/job/lldb-cmake/59091 Errors appear to be related to incorrect tool substitution in the Dexter test commands, and a currently unknown error with one of the general debuginfo tests that uses Dexter.