Remove a graduated experiment.

Author: iclanton

common/config/rush/experiments.json

@@ -3,7 +3,7 @@
  * Rush features.  More documentation is available on the Rush website: https://rushjs.io
  */
 {
-  "$schema": "https://developer.microsoft.com/json-schemas/rush/v5/experiments.schema.json",
+  "$schema": "https://developer.microsoft.com/json-schemas/rush/v5/experiments.schema.json"
 
   /**
    * By default, 'rush install' passes --no-prefer-frozen-lockfile to 'pnpm install'.
@@ -49,12 +49,6 @@
    */
   // "buildSkipWithAllowWarningsInSuccessfulBuild": true,
 
-  /**
-   * If true, the phased commands feature is enabled. To use this feature, create a "phased" command
-   * in common/config/rush/command-line.json.
-   */
-  "phasedCommands": true
-
   /**
    * If true, perform a clean install after when running `rush install` or `rush update` if the
    * `.npmrc` file has changed since the last install.