[8.13][DOCS] Removes release note item from ML enhancements (#107010)

Author: szabosteve

docs/reference/release-notes/8.13.0.asciidoc

@@ -339,7 +339,6 @@ Machine Learning::
 * Add 3 automatic restarts for `pytorch_inference` processes that stop unexpectedly {es-pull}104433[#104433]
 * Add support for Cohere inference service {es-pull}104559[#104559]
 * Always test for spikes and dips as well as changes in the change point aggregation {es-pull}103922[#103922]
-* Apply windowing and chunking to long documents {es-pull}104363[#104363]
 * Automatically download the ELSER model when PUT in `_inference` {es-pull}104334[#104334]
 * Better handling of number of allocations in pytorch_inference in the case that hardware_concurrency fails {ml-pull}2607[#2607]
 * Change detection aggregation improvements {es-pull}102824[#102824]