Fixes #501 (#518)

Removing JMH dependency as no JMH tests are present today.

Author: NiteshKant

build.gradle

@@ -37,9 +37,6 @@ subprojects {
     dependencies {
         compile "io.reactivex:rxjava:1.1.5"
 
-        compile 'org.openjdk.jmh:jmh-generator-annprocess:1.11.2'
-        compile 'org.openjdk.jmh:jmh-core:1.11.2'
-
         testCompile 'junit:junit:4.12'
         testCompile "org.hamcrest:hamcrest-library:1.3"
         testCompile "org.mockito:mockito-core:1.+"