Ooops... do not try to cd into pom-scijava twice

With the recent changes, we are already in pom-scijava by the time
we deploy.

Signed-off-by: Johannes Schindelin <[email protected]>

Author: dscho

bump-pom-scijava.sh

@@ -224,5 +224,4 @@ commit_and_push "Increase pom-scijava version to $new_version" \
 	-m "$message" $pom
 
 test -n "$skip_commit" ||
-(cd pom-scijava &&
- mvn -DupdateReleaseInfo=true deploy)
+mvn -DupdateReleaseInfo=true deploy