remove unrelated changes

Author: dorx

docs/mllib-stats.md

@@ -277,12 +277,6 @@
         <version>3.3</version>
         <scope>test</scope>
       </dependency>
-      <dependency>
-        <groupId>org.apache.commons</groupId>
-        <artifactId>commons-math3</artifactId>
-        <version>3.3</version>
-        <scope>test</scope>
-      </dependency>
       <dependency>
         <groupId>com.google.code.findbugs</groupId>
         <artifactId>jsr305</artifactId>