Remove --optional-for-each convert (#351)

Author: calda

Sources/AirbnbSwiftFormatTool/airbnb.swiftformat

@@ -46,7 +46,6 @@
 --else-position same-line # elseOnSameLine
 --guard-else next-line # elseOnSameLine
 --single-line-for-each convert # preferForLoop
---optional-for-each convert # preferForLoop
 --short-optionals always # typeSugar
 --semicolons never # semicolons
 --doc-comments preserve # docComments
@@ -146,4 +145,4 @@
 --rules redundantBreak
 --rules redundantTypedThrows
 --rules preferFinalClasses
---rules simplifyGenericConstraints
+--rules simplifyGenericConstraints