updates to fix mondo qc errors from synonym sync pipeline (#8402)

* updates to fix mondo qc errors from synonym sync pipeline

* add back correct xrefs

Author: twhetzel

src/ontology/mondo-edit.obo

@@ -82425,7 +82425,6 @@ xref: MEDGEN:308434 {source="MONDO:equivalentTo", source="MONDO:MEDGEN"}
 xref: MESH:D001170 {source="DOID:813", source="MONDO:equivalentTo"}
 xref: NANDO:2200437 {source="MONDO:NANDO", source="https://orcid.org/0000-0003-0011-764X", source="https://orcid.org/0000-0002-0170-9172"}
 xref: NCIT:C26699 {source="MONDO:equivalentTo"}
-xref: NCIT:C26700 {source="DOID:813", source="MONDO:directSiblingOf"}
 xref: SCTID:156470005 {source="DOID:813"}
 xref: SCTID:196415003 {source="DOID:813"}
 xref: SCTID:201455003 {source="DOID:813"}
@@ -461134,7 +461133,7 @@ synonym: "pituitary-dependent Cushing's disease" EXACT [doi:10.1093/jama/9780195
 xref: DOID:3946 {source="EFO:1001110", source="MONDO:equivalentTo"}
 xref: EFO:1001110 {source="MONDO:equivalentTo", source="MONDO:EFO"}
 xref: GARD:19699 {source="MONDO:GARD"}
-xref: ICD10CM:E24.0 {source="EFO:1001110", source="MONDO:equivalentTo", source="Orphanet:99892/ntbt", source="DOID:3946", source="Orphanet:99892", source="MONDO:directSiblingOf"}
+xref: ICD10CM:E24.0 {source="EFO:1001110", source="MONDO:equivalentTo", source="Orphanet:99892/ntbt", source="DOID:3946", source="Orphanet:99892"}
 xref: icd11.foundation:212778081 {source="MONDO:equivalentTo"}
 xref: MedDRA:10035109 {source="EFO:1001110"}
 xref: MEDGEN:575036 {source="MONDO:equivalentTo", source="MONDO:MEDGEN"}