Minor: Remove comment in build.gradle re. springDataJpaVersion (#702)

This has been removed in a20f76d686,
and it's confusing to look for what that means, e.g. while code
reviewing proposed "bump" changes to the used versions of
spring.gradle:dependency-management-plugin and
springframework.boot:spring-boot-gradle-plugin.

fineract-provider/build.gradle

@@ -38,7 +38,7 @@ buildscript {
      classpath 'com.bmuschko:gradle-tomcat-plugin:2.5',
                'nl.javadude.gradle.plugins:license-gradle-plugin:0.11.0',
                'org.zeroturnaround:gradle-jrebel-plugin:1.1.2',
-               'org.springframework.boot:spring-boot-gradle-plugin:2.2.4.RELEASE' // also change springDataJpaVersion
+               'org.springframework.boot:spring-boot-gradle-plugin:2.2.4.RELEASE'
       // below
      classpath "org.apache.openjpa:openjpa:$openJPAVersion"
      classpath 'com.radcortez.gradle:openjpa-gradle-plugin:3.1.0'