Repairing commit r23173

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@23181 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Removed If[x>0,f(x)] => (x>0)*f(x) hack

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@23182 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e