[intellij-sh] Grammars cleanup
[intellij-sh] Grammars cleanup

GitOrigin-RevId: 2679df320e5acbb027069ae9ad08e2105414cf41
allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community