cleanup all-axiomsys and all-interpsys dependencies

git-svn-id: https://fricas.svn.sourceforge.net/svnroot/fricas/trunk@1590 b0c55286-4f34-0410-a049-a1e7e93b0762
replace timestamp code by `date`

git-svn-id: https://fricas.svn.sourceforge.net/svnroot/fricas/trunk@1591 b0c55286-4f34-0410-a049-a1e7e93b0762
remove warm.data, topics.data, and related code

git-svn-id: https://fricas.svn.sourceforge.net/svnroot/fricas/trunk@1592 b0c55286-4f34-0410-a049-a1e7e93b0762