The removed_quad keyword uses the wrong WOQL AST (RemovedQuad, should be DeletedQuad)

[hoijnet]

Describe the bug
The removed_quad keyword uses the wrong WOQL AST (RemovedQuad, should be DeletedQuad)

To Reproduce
This aligns with a terminusdb change and alignment performed due to non-working removed_triple functionality.

Expected behavior
removed_quad should be working, and refer to correct DeletedQuad keyword in woql.json