Ignore deletes that do not match.

nodeSolidServer/node-solid-server#1085

src/store.js

@@ -154,21 +154,18 @@ class IndexedFormula extends Formula { // IN future - allow pass array of statem
             return sts[0]
           }
         })
-        if (bad.length) {
-          // console.log('Could not find to delete ' + bad.length + 'statements')
-          // console.log('despite ' + targetKB.statementsMatching(bad[0].subject, bad[0].predicate)[0])
-          return patchCallback('Could not find to delete: ' + bad.join('\n or '))
+        if (!bad.length) {
+          ds2.forEach(function (st) {
+            targetKB.remove(st)
+          })
         }
-        ds2.map(function (st) {
-          targetKB.remove(st)
-        })
       }
       if (patch['insert']) {
         // log.info("doPatch insert "+patch['insert'])
         ds = patch['insert']
         if (binding) ds = ds.substitute(binding)
         ds = ds.statements
-        ds.map(function (st) {
+        ds.forEach(function (st) {
           st.why = target
           targetKB.add(st.subject, st.predicate, st.object, st.why)
         })