remove cache

* remove cache, cache setup is not easy, todays servers do not really
* need it anymore
* add prototypes and fix parameter issues
* suppress redefinition

lib/calcms/startup.pl

@@ -2,8 +2,6 @@ use lib qw(/home/radio/calcms/calcms/);
 
 use Data::Dumper;
 use Apache::DBI();
-#$Apache::DBI::DEBUG = 2;
-
 use Time::Local();
 use Date::Calc();
 use Calendar::Simple qw(date_span);
@@ -12,7 +10,6 @@ use config();
 use log();
 use time();
 use db();
-use cache();
 use template();
 
 #do not delete last line!