Suppress Information Schema in Lite Version

[tsutomi]

The INFORMATION_SCHEMA that includes the information regarding the system (eg. the tables, columns, schema, constraints, etc.) is not important in a Lite version: it bloats a limited-resource system with views and it also requires the Security features that are going to be suppressed in Lite.

Also, the SHOW statement has to be suppressed or redesigned, since it makes a large use of the INFORMATION_SCHEMA.