remove json library

.idea/libraries/json.xml

@@ -1,10 +0,0 @@
-<component name="libraryTable">
-  <library name="json" type="repository">
-    <properties maven-id="org.json:json:20180130" />
-    <CLASSES>
-      <root url="jar://$MAVEN_REPOSITORY$/org/json/json/20180130/json-20180130.jar!/" />
-    </CLASSES>
-    <JAVADOC />
-    <SOURCES />
-  </library>
-</component>

platform/build-scripts/groovy/org/jetbrains/intellij/build/CommunityLibraryLicenses.groovy

@@ -420,8 +420,6 @@ class CommunityLibraryLicenses {
                        url: "https://github.com/jboss-javassist/javassist", licenseUrl: "http://www.apache.org/licenses/LICENSE-2.0.txt"),
     new LibraryLicense(name: "Objenesis", libraryName: "Objenesis", version: "2.5.1", license: "Apache 2.0",
                        url: "http://objenesis.org/", licenseUrl: "http://www.apache.org/licenses/LICENSE-2.0.txt"),
-    new LibraryLicense(name: "JSON", libraryName: "json", version: "20180130", license: "JSON",
-                       url: "https://github.com/douglascrockford/JSON-java", licenseUrl: "https://www.json.org/license.html"),
 
     jetbrainsLibrary("intellij-coverage"),
     jetbrainsLibrary("intellij-test-discovery"),