The address book objects are not removed from the SRX after being pushed from Junos Space: In this test in Junos:
1. We removed the address Test-address from Group Test-group
2. We then deleted the address Test-address. 
When we push the rule we can see that Junos is only doing like follows
View configuration for SRX:
delete security address-book global address-set Test-group address Test-address

It doesn't show deletion of the address Test-address in the preview.

By default, SD won't delete the unused objects. To delete it, we need to enable the below option:

Navigate Network management platform > Administration > Application > Right click on "Security director" > Modify application settings > Update-device > Enable "Delete unused Addresses and Address groups"