Remove unused configobj and validate libraries from externals.

setupbase.py

@@ -109,7 +109,6 @@ def find_packages():
     add_package(packages, 'extensions')
     add_package(packages, 'external')
     add_package(packages, 'external.argparse')
-    add_package(packages, 'external.configobj')
     add_package(packages, 'external.decorator')
     add_package(packages, 'external.decorators')
     add_package(packages, 'external.guid')
@@ -120,7 +119,6 @@ def find_packages():
     add_package(packages, 'external.pyparsing')
     add_package(packages, 'external.simplegeneric')
     add_package(packages, 'external.ssh')
-    add_package(packages, 'external.validate')
     add_package(packages, 'kernel')
     add_package(packages, 'frontend')
     add_package(packages, 'frontend.qt')