Staging: i2o: Remove indentation of labels

This patch fixes the checkpatche.pl warnings:

WARNING: labels should not be indented
+      context_remove:

WARNING: labels should not be indented
+      nop_msg:

WARNING: labels should not be indented
+      exit:

Signed-off-by: Helen Fornazier <helen.fornazier@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>