remove fk constraint jobsets.nixExprInput -> JobsetInputs.name, would only work on postgresql in postpone-fk-checking mode (at end of transaction in stead of through the transaction) which is not the default

Created by  Rob Vermaas  on March 7, 2011
WQCBGHP376557PRZDIITBRFAW4GULRDC3R5K6BDQACGDJYJ7P4OAC
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