Disable main.gis from embedded

Fails with:
query 'select ST_AsWKT(GeometryCollection(Point(44, 6), @g))' failed:
ER_ILLEGAL_VALUE_FOR_TYPE (1367): Illegal non geometric '@`g`' value
found during parsing

mysql-test/main/gis.test

 -- source include/have_geometry.inc
-
+-- source include/not_embedded.inc
 
 #
 # Spatial objects