Remove kotlin version from properties

Author: oliemansm

README.md

@@ -50,8 +50,8 @@ and join the team!
 
 If you're using `graphql-java-tools` in combination with Spring Boot 2.1.x or below then you need to
 set the
-`kotlin.version` in your Spring Boot project explicitly to version 1.3.70, because Spring Boot
-Starter parent currently overrides it with a 1.2.* version of Kotlin.
+`kotlin.version` in your Spring Boot project explicitly to version >= 1.3.70, because Spring Boot
+Starter parent of that Spring Boot version overrides it with a 1.2.* version of Kotlin.
 `graphql-java-tools` requires 1.3.* however because of its coroutine support. If you don't override
 this version you will run into a `NoClassDefFoundError`.
 

gradle.properties

@@ -39,7 +39,6 @@ LIB_GRAPHQL_ANNOTATIONS_VER=8.3
 LIB_REFLECTIONS_VER=0.9.11
 LIB_APACHE_COMMONS_TEXT=1.8
 LIB_JSOUP_VER=1.13.1
-kotlin.version=1.4.10
 ### Gradle Plugins
 LIB_BINTRAY_PLUGIN_VER=1.8.5
 LIB_RELEASE_PLUGIN_VER=2.8.1