redundant .setting and target folders

[netalpha]

On branch master
Your branch is up-to-date with 'origin/master'.
Changes not staged for commit:
    modified:   seep-java2sdg/.settings/org.eclipse.jdt.core.prefs
    modified:   seep-system/.settings/org.eclipse.jdt.core.prefs

Untracked files:
    seep-java2sdg/.settings/org.eclipse.core.resources.prefs
    seep-java2sdg/.settings/org.eclipse.m2e.core.prefs
    seep-streamsql/.settings/
    seep-streamsql/target/
    seep-system/.settings/org.eclipse.core.resources.prefs
    seep-system/.settings/org.eclipse.m2e.core.prefs
    seep-system/examples/stateless-simple-query/dist/
    seep-system/libs/

These could be deleted or git ignored.