recipe/postgres: remove postgres backup

This is not used, and probably buggy
24 jobs for fix/postgres-cleanup in 0 seconds
Status Job ID Name Coverage
  External
passed SlapOS.Eggs.UnitTest-Jerome.Python2

00:41:46

passed SlapOS.Eggs.UnitTest-Jerome.Python3

00:36:22

passed SlapOS.Eggs.UnitTest-Jerome.Python2

00:26:38

passed SlapOS.Eggs.UnitTest-Jerome.Python2

00:23:37

passed SlapOS.Eggs.UnitTest-Jerome.Python2

01:54:58

passed SlapOS.Eggs.UnitTest-Jerome.Python2

01:49:06

passed SlapOS.Eggs.UnitTest-Jerome.Python2

00:33:01

passed SlapOS.Eggs.UnitTest-Jerome.Python2

00:30:44

passed SlapOS.Eggs.UnitTest-Jerome.Python2

00:36:41

passed SlapOS.Eggs.UnitTest-Jerome.Python2

00:44:58

passed SlapOS.Eggs.UnitTest-Jerome.Python2

00:27:52

passed SlapOS.Eggs.UnitTest-Jerome.Python2

00:33:01

passed SlapOS.Eggs.UnitTest-Jerome.Python2

02:07:05

passed SlapOS.Eggs.UnitTest-Jerome.Python3

00:45:34

passed SlapOS.Eggs.UnitTest-Jerome.Python3

00:47:10

passed SlapOS.Eggs.UnitTest-Jerome.Python3

01:15:08

passed SlapOS.Eggs.UnitTest-Jerome.Python3

01:47:35

passed SlapOS.Eggs.UnitTest-Jerome.Python3

00:17:41

passed SlapOS.Eggs.UnitTest-Jerome.Python3

00:44:43

passed SlapOS.Eggs.UnitTest-Jerome.Python3

00:33:49

passed SlapOS.Eggs.UnitTest-Jerome.Python3

00:17:04

passed SlapOS.Eggs.UnitTest-Jerome.Python3

00:32:11

passed SlapOS.Eggs.UnitTest-Jerome.Python3

00:32:34

passed SlapOS.Eggs.UnitTest-Jerome.Python3

00:45:28