Fix for https://github.com/typeorm/typeorm/issues/3938 to be used with patch-package

typeorm+0.2.22.patch

diff --git a/node_modules/typeorm/persistence/subject-builder/OneToManySubjectBuilder.js b/node_modules/typeorm/persistence/subject-builder/OneToManySubjectBuilder.js
index 43fb09e..b62e654 100644
--- a/node_modules/typeorm/persistence/subject-builder/OneToManySubjectBuilder.js
+++ b/node_modules/typeorm/persistence/subject-builder/OneToManySubjectBuilder.js
@@ -145,10 +145,11 @@ var OneToManySubjectBuilder = /** @class */ (function () {
                 parentSubject: subject,
                 canBeUpdated: true,
                 identifier: removedRelatedEntityRelationId,
-                changeMaps: [{
-                        relation: relation.inverseRelation,
-                        value: null
-                    }]
+                mustBeRemoved: !relation.inverseRelation.isNullable ? true : undefined,
+                changeMaps: relation.inverseRelation.isNullable ? [{
+                    relation: relation.inverseRelation,
+                    value: null
+                }] : undefined,
             });
             _this.subjects.push(removedRelatedEntitySubject);
         });