remove e-ë mutation, this is taken care of by transliteration

Author: lonvia

settings/icu_tokenizer.yaml

@@ -183,9 +183,6 @@ token-analysis:
       mode: variant-only
       variants:
           - !include icu-rules/variants-ru.yaml
-      mutations:
-          - pattern: ё
-            replacements: ["ё", "е"]
     - id: sk
       analyzer: generic
       mode: variant-only