Remove mysql dependencies in sli/core

Remove mysql dependencies in sli/core

Remove lingering mysql dependencies in sli/core, which prevented odlsli
container from starting up clean.  Note: tested this using bareodl container
and verified that these changes install clean AFTER changing incorrect
driver property name in dblib.properties.  This patch is fine, but a second
patch to ccsdk/distribution is needed to fix that property file.

Change-Id: I6a900d1c29998867bfbae29d5e113c4e392a8bb9
Issue-ID: CCSDK-95
Signed-off-by: Dan Timoney <dtimoney@att.com>