I believe you are referring to the Site Metrics report, where it shows two extra columns for data 4 weeks prior and 52 weeks prior. You cannot remove the columns in the site metrics report. However there are two easy methods to not have those columns
Run the Key metrics report and add in your required metrics. The Key metrics report doesn't show the other two columns
Run the trended metrics report in Workspace. Again no extra columns will be shown.
Hi Anshika, what extra data are you referring to? You can use exclude containers in a segment to remove data you need; you can also use search filters to remove any specific line items in a specific report.