remove previous time range mode (#104830)

docs/user/dashboard/lens-advanced.asciidoc

@@ -301,9 +301,6 @@ image::images/lens_advanced_5_2.png[Line chart with cumulative sum of orders mad
 *Lens* allows you to compare the currently selected time range with historical data using the *Time shift* option. To calculate the percent
 change, use *Formula*.
 
-Time shifts can be used on any metric. The special shift *previous* will show the time window preceding the currently selected one, spanning the same duration.
-For example, if *Last 7 days* is selected in the time filter, *previous* will show data from 14 days ago to 7 days ago.
-
 If multiple time shifts are used in a single chart, a multiple of the date histogram interval should be chosen - otherwise data points might not line up in the chart and empty spots can occur.
 For example, if a daily interval is used, shifting one series by *36h*, and another one by *1d*, is not recommended. In this scenario, either reduce the interval to *12h*, or create two separate charts.
 

x-pack/plugins/lens/public/indexpattern_datasource/time_shift_utils.tsx

@@ -81,12 +81,6 @@ export const timeShiftOptions = [
     }),
     value: '1y',
   },
-  {
-    label: i18n.translate('xpack.lens.indexPattern.timeShift.previous', {
-      defaultMessage: 'Previous time range',
-    }),
-    value: 'previous',
-  },
 ];
 
 export const timeShiftOptionOrder = timeShiftOptions.reduce<{ [key: string]: number }>(