Then tell read.table not to use row.names:
systems <- read.table("http://getfile.pl?test.csv",
header=TRUE, sep=",", row.names=NULL)
and now your rows will simply be numbered.
Also look at read.csv which is a wrapper for read.table which already sets the sep=',' and header=TRUE arguments so that your call simplifies to
systems <- read.csv("http://getfile.pl?test.csv", row.names=NULL)
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