[R] I want to avioid unnecessary value

[Grześ]

I have a database like this:

"kol1";"kol2";"kol3" ...
"2";"5";"9"
"9";"6";"6"
"4";"6";"5"...
 
I looking for a kod in R which let mi aviod in column unnecessary value, for
example number "9".

So, if I have:
 
Kol1
2
9
4
4...
 
after loop in R I would like to get my column like this:
Kol1
2
4
4...

If you have any idea I'll be grateful  to you for any idea
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