Bug#1100941: python3-bsddb3: Module bsddb3 is deprecated and should be removed

[Bastian Germann]

Control: retitle -1 python3-bsddb3: Module bsddb3 is deprecated and should be 
removed
Control: unblock -1 by 1104903

Please note that db5.3 is sunset in Debian, so please remove this
package instead.