Remove duplicate anchor

Author: marcphilipp

documentation/src/docs/asciidoc/user-guide/writing-tests.adoc

@@ -1823,8 +1823,6 @@ Other extensions can access the parameters and resolved arguments of a parameter
 or class by retrieving a `{ParameterInfo}` object from the `{ExtensionContext_Store}`.
 Please refer to the Javadoc of `{ParameterInfo}` for details.
 
-[[writing-tests-parameterized-tests-argument-aggregation]]
-
 [[writing-tests-parameterized-tests-sources]]
 ==== Sources of Arguments