Ignore SIL Files in Swift Syntax Parser Validation
Ignore SIL Files in Swift Syntax Parser Validation

Validating these files creates a load of false positive error cases
since the new Swift parser doesn't handle SIL. Disable validating
these files.

roambotics/swift,apple/swift,apple/swift,apple/swift,roambotics/swift,glessard/swift,apple/swift,roambotics/swift,glessard/swift,glessard/swift,glessard/swift,glessard/swift,roambotics/swift,roambotics/swift,roambotics/swift,apple/swift,apple/swift,glessard/swift