Add Subgraph.removeChild API (#105)

Author: Kyle-Ye

Package.resolved

@@ -131,6 +131,10 @@ void OGSubgraphAddChild(OGSubgraphRef parent, OGSubgraphRef child) {
     // TODO
 }
 
+void OGSubgraphRemoveChild(OGSubgraphRef parent, OGSubgraphRef child) {
+    // TODO
+}
+
 void OGSubgraphApply(OGSubgraphRef cf_subgraph,
                      OGAttributeFlags flags,
                      const void (*function)(const void * _Nullable context OG_SWIFT_CONTEXT, OGAttribute attribute) OG_SWIFT_CC(swift),

Sources/OpenGraph_SPI/Graph/OGSubgraph.cpp

@@ -61,6 +61,10 @@ OG_EXPORT
 OG_REFINED_FOR_SWIFT
 void OGSubgraphAddChild(OGSubgraphRef parent, OGSubgraphRef child) OG_SWIFT_NAME(OGSubgraphRef.addChild(self:_:));
 
+OG_EXPORT
+OG_REFINED_FOR_SWIFT
+void OGSubgraphRemoveChild(OGSubgraphRef parent, OGSubgraphRef child) OG_SWIFT_NAME(OGSubgraphRef.removeChild(self:_:));
+
 OG_EXPORT
 OG_REFINED_FOR_SWIFT
 void OGSubgraphApply(OGSubgraphRef cf_subgraph,