Removes superfluous parenthesis in sysexts "saltedpasswords",
"scheduler", "setup" and "statictemplates".

Change ("a" . "b") . "c" into "a" . "b" . "c" using the lex-pass tool.

Change-Id: Ie1e7d052f5d8dfac95d01a70ed750e69cf4bb7f6
Resolves: #40970
Related: #40095
Reviewed-on: http://review.typo3.org/14629
Reviewed-by: Thomas Loeffler
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters
Reviewed-by: Jigal van Hemert
Tested-by: Jigal van Hemert