Removing calls in scenarios

Hi ,

I have recorded a scenario from gatling and i have imported the script to eclipse , Whenever i try to remove some of api calls which are unnecessary , I get compilation error . Any solution for this ? below is the error

Description Resource Path Location Type
type mismatch; found : io.gatling.http.request.builder.HttpRequestBuilder required: io.gatling.core.structure.ChainBuilder LoginTeacher.scala /first/src/test/scala/slz/first line 70 Scala Problem

Description Resource Path Location Type
value http is not a member of io.gatling.http.request.builder.Http possible cause: maybe a semicolon is missing before `value http’? LoginTeacher.scala /first/src/test/scala/slz/first line 63 Scala Problem