fix subsequent replacements

Two replacement words directly following each other did not
work as expected because each expects a space at the
beginning/end while there was only one space available.

Also forbit composing a word after a space was added in the
end by a previous replacement.

settings/legacy_icu_tokenizer.yaml

@@ -23,7 +23,6 @@ transliteration:
     - "[^[:Ascii:]] >"
     - ":: lower ()"
     - ":: NFC ()"
-    - "[:Space:]+ > ' '"
 variants:
     - !include icu-rules/variants-bg.yaml
     - !include icu-rules/variants-ca.yaml