TASK: Add removed TypoScript feature to docs

Documentation/source/features.rst

@@ -103,6 +103,15 @@ information. For configuration options see :ref:`configuration-removedFunctionCo
 Check for usage of *removed constants*. The constants are configured in same way as removed
 functions. For configuration options see :ref:`configuration-removedConstantConfigFiles`.
 
+Check for usage of *removed TypoScript*. The TypoScript objects are configured in same way as
+removed functions. For configuration options see :ref:`configuration-removedTypoScriptConfigFiles`.
+This will check whether you are using already removed TypoScript parts, supported are:
+
+- Objects, e.g. ``CLEARGIF``, ``FORM``
+
+- Paths like ``styles.insertContent``
+
+For a complete list, take a look at the corresponding YAML-Files.
 
 Further checks
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