Remove deprecated free() calls (#1925)

Replaced with the standard close()

cscore/src/main/java/edu/wpi/cscore/VideoListener.java

@@ -1,5 +1,5 @@
 /*----------------------------------------------------------------------------*/
-/* Copyright (c) 2016-2018 FIRST. All Rights Reserved.                        */
+/* Copyright (c) 2016-2019 FIRST. All Rights Reserved.                        */
 /* Open Source Software - may be modified and shared by FRC teams. The code   */
 /* must be accompanied by the FIRST BSD license file in the root directory of */
 /* the project.                                                               */
@@ -27,11 +27,6 @@ public class VideoListener implements AutoCloseable {
     m_handle = CameraServerJNI.addListener(listener, eventMask, immediateNotify);
   }
 
-  @Deprecated
-  public void free() {
-    close();
-  }
-
   @Override
   public synchronized void close() {
     if (m_handle != 0) {

cscore/src/main/java/edu/wpi/cscore/VideoSink.java

@@ -46,11 +46,6 @@ public class VideoSink implements AutoCloseable {
     m_handle = handle;
   }
 
-  @Deprecated
-  public void free() {
-    close();
-  }
-
   @Override
   public synchronized void close() {
     if (m_handle != 0) {
@@ -186,7 +181,7 @@ public class VideoSink implements AutoCloseable {
    * @return Connected source; nullptr if no source connected.
    */
   public VideoSource getSource() {
-    // While VideoSource.free() will call releaseSource(), getSinkSource()
+    // While VideoSource.close() will call releaseSource(), getSinkSource()
     // increments the internal reference count so this is okay to do.
     return new VideoSource(CameraServerJNI.getSinkSource(m_handle));
   }

cscore/src/main/java/edu/wpi/cscore/VideoSource.java

@@ -81,11 +81,6 @@ public class VideoSource implements AutoCloseable {
     m_handle = handle;
   }
 
-  @Deprecated
-  public void free() {
-    close();
-  }
-
   @Override
   public synchronized void close() {
     if (m_handle != 0) {