[build] Remove dash-dash from build-presets.ini (NFC) #34300
Merged
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Remove the many
dash-dash
lines in build-presets.ini, their handling is a no-op:https://github.com/apple/swift/blob/2c3a6e06f4edc2ed64a638e30379bbcc83479768/utils/build_swift/build_swift/presets.py#L256-L258