fix: remove dead readme badge

Author: BelfordZ

README.md

@@ -4,7 +4,6 @@
   <span>
     <img alt="CircleCI branch" src="https://img.shields.io/circleci/project/github/json-schema-tools/reference-resolver/master.svg">
     <img src="https://codecov.io/gh/json-schema-tools/reference-resolver/branch/master/graph/badge.svg" />
-    <img alt="Dependabot status" src="https://api.dependabot.com/badges/status?host=github&repo=json-schema-tools/reference-resolver" />
     <img alt="npm" src="https://img.shields.io/npm/dt/@json-schema-tools/reference-resolver.svg" />
     <img alt="GitHub release" src="https://img.shields.io/github/release/json-schema-tools/reference-resolver.svg" />
     <img alt="GitHub commits since latest release" src="https://img.shields.io/github/commits-since/json-schema-tools/reference-resolver/latest.svg" />
@@ -37,15 +36,15 @@ import JSONSchema from "@json-schema-tools/meta-schema";
 
 referenceResolver.protocolHandlerMap.ipfs = (uri) => {
    const pretendItsFetchedFromIpfs = {
-     title: "foo", 
+     title: "foo",
      type: "string",
    } as JSONSchema;
    return Promise.resolve(fetchedFromIpfs);
 };
 
 referenceResolver.protocolHandlerMap["customprotocol"] = (uri) => {
-   return Promise.resolve({ 
-     type: "string", 
+   return Promise.resolve({
+     type: "string",
      title: uri.replace("customprotocol://", ""),
    });
 };