You can disable report sections and items that are not needed in a report by adding report section names or report item names to the disable element in the report_settings.xml file.
Each report item name and its corresponding report entry name is listed in “Report sections.”
Disabling a report section disables all the report items in that section. For example, to remove the Conversion Rate report section, and all its report items from a report, add conv_rate_summ to the disable element as shown here.
<report_settings> <disable list="conv_rate_summ" /> </report_settings>
You can disable any number of report sections or report items. The following example disables the conversion_rate_by_hour and conversion_rate_by_date but not the other conversion rate items in the report section.
<report_settings> <disable list="conversion_rate_by_hour,conversion_rate_by_date" /> </report_settings>

