Drop PDF version of EJB3 spatial tutorial

There's an ODT version of the manual, pdf can be generated

git-svn-id: http://svn.osgeo.org/postgis/trunk@11140 b70326c6-7e19-0410-871a-916f4a2858ee
Fix equality operator between EMPTY and point on origin (#2110)

git-svn-id: http://svn.osgeo.org/postgis/trunk@11142 b70326c6-7e19-0410-871a-916f4a2858ee