Removed generated namespace in MathAbs target, as other Math targets had no...

Removed generated namespace in MathAbs target, as other Math targets had no explicit namespace as well.
1 job for Haller in 3 minutes and 34 seconds
Name Stage Failure
failed
BranchJobLinux Linux
[ERROR] 	at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:347)
[ERROR] -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
ERROR: Job failed: exit code 1