Revert "fdo#32530 calc:alignment depend on 1st char direct"

This reverts commit f08c1edc0a99e0c29fb1614162d3e88c5660e092.

This commit causes sc_macros_test to fail with "Assertion
`!"meHorJustResult does not match getAlignmentFromContext()"' failed."
and Eike has expressed some doubts about it too so revert it for now.