[DOCS] Remove beta label from normalizers (#34326)

Author: jimczi

docs/reference/analysis/normalizers.asciidoc

@@ -1,8 +1,6 @@
 [[analysis-normalizers]]
 == Normalizers
 
-beta[]
-
 Normalizers are similar to analyzers except that they may only emit a single
 token. As a consequence, they do not have a tokenizer and only accept a subset
 of the available char filters and token filters. Only the filters that work on