Removed extra newlines from beginning of Java classes (#859)

The content of this PR was generated by styleguide#111.

wpilibjIntegrationTests/src/main/java/edu/wpi/first/wpilibj/fixtures/DIOCrossConnectFixture.java

@@ -17,7 +17,6 @@ import edu.wpi.first.wpilibj.DigitalOutput;
  * Connects a digital input to a digital output.
  */
 public class DIOCrossConnectFixture implements ITestFixture {
-
   private static final Logger logger = Logger.getLogger(DIOCrossConnectFixture.class.getName());
 
   private final DigitalInput m_input;

wpilibjIntegrationTests/src/main/java/edu/wpi/first/wpilibj/fixtures/RelayCrossConnectFixture.java

@@ -14,7 +14,6 @@ import edu.wpi.first.wpilibj.Relay;
  * A connection between a {@link Relay} and two {@link DigitalInput DigitalInputs}.
  */
 public abstract class RelayCrossConnectFixture implements ITestFixture {
-
   private DigitalInput m_inputOne;
   private DigitalInput m_inputTwo;
   private Relay m_relay;

wpilibjIntegrationTests/src/main/java/edu/wpi/first/wpilibj/fixtures/SampleFixture.java

@@ -13,7 +13,6 @@ package edu.wpi.first.wpilibj.fixtures;
  * test.
  */
 public class SampleFixture implements ITestFixture {
-
   @Override
   public boolean setup() {
     /*