[Plplot-general] How to remove an old version

[Jerry <lan...@qw...>]

I just installed 5.7.2 whereas my previous installation was 5.5.3.  
How do I get rid of the old versions of everything now that they  
exist in directories alongside the new version? Or should I have  
uninstalled the the old version before installing the new version? Or  
should I just ignore the problem?

Jerry