Eliminate duplication

Author: DaveCTurner

build-tools-internal/build.gradle

@@ -211,7 +211,7 @@ dependencies {
   api 'com.netflix.nebula:gradle-extra-configurations-plugin:5.0.1'
   api 'com.netflix.nebula:gradle-info-plugin:9.2.0'
   api 'org.apache.rat:apache-rat:0.11'
-  api 'net.java.dev.jna:jna:5.10.0'
+  api "net.java.dev.jna:jna:${versions.getProperty('jna')}"
   api 'gradle.plugin.com.github.jengelman.gradle.plugins:shadow:7.0.0'
   // for our ide tweaking
   api 'gradle.plugin.org.jetbrains.gradle.plugin.idea-ext:gradle-idea-ext:0.7'

build-tools-internal/version.properties

@@ -18,7 +18,6 @@ log4j             = 2.11.1
 slf4j             = 1.6.2
 ecsLogging        = 1.2.0
 
-# when updating the JNA version, also update the version in build-tools-internal/build.gradle
 jna               = 5.10.0
 
 netty             = 4.1.66.Final