docs: outdated remove trustLevel doc references

docs/usage/configuration-options.md

@@ -1541,7 +1541,6 @@ If enabled Renovate will pin Docker images by means of their SHA256 digest and n
 Post-upgrade tasks are commands that are executed by Renovate after a dependency has been updated but before the commit is created.
 The intention is to run any additional command line tools that would modify existing files or generate new files when a dependency changes.
 
-This is only available on Renovate instances that have a `trustLevel` of 'high'.
 Each command must match at least one of the patterns defined in `allowedPostUpgradeTasks` in order to be executed.
 If the list of allowed tasks is empty then no tasks will be executed.
 

docs/usage/self-hosted-configuration.md

@@ -60,14 +60,12 @@ npx ng update @angular/core --from=10.0.0 --to=11.0.0 --migrate-only --allow-dir
 
 A list of regular expressions that determine which commands in `postUpgradeTasks` are allowed to be executed.
 If this list is empty then no tasks will be executed.
-Also you need to have `"trustLevel": "high"`, otherwise these tasks will be ignored.
 
 e.g.
 
 ```json
 {
-  "allowedPostUpgradeCommands": ["^tslint --fix$", "^tslint --[a-z]+$"],
-  "trustLevel": "high"
+  "allowedPostUpgradeCommands": ["^tslint --fix$", "^tslint --[a-z]+$"]
 }
 ```