More changes from PR jenkinsci#67

Removed unnecessary cast.
Removed unnecessary import.

Author: pjdarton

src/main/java/org/jenkinsci/plugins/vsphere/builders/ReconfigureCpu.java

@@ -15,7 +15,6 @@
 package org.jenkinsci.plugins.vsphere.builders;
 
 import hudson.*;
-import hudson.Extension;
 import hudson.model.AbstractBuild;
 import hudson.model.BuildListener;
 import hudson.model.Run;

src/main/java/org/jenkinsci/plugins/vsphere/tools/CloudProvisioningRecord.java

@@ -123,7 +123,7 @@ private boolean hasFiniteCapacity() {
 
     private double calcFullness() {
         final int maxToProvision = calcMaxToProvision();
-        return ((double) calcCurrentCommitment()) / (double) maxToProvision;
+        return calcCurrentCommitment() / (double) maxToProvision;
     }
 
     boolean hasCapacityForMore() {

src/test/java/org/jenkinsci/plugins/vsphere/tools/CloudProvisioningAlgorithmTest.java

@@ -323,8 +323,8 @@ private static vSphereCloudSlaveTemplate stubTemplate(String prefix, int templat
     private static String toHexString(byte[] bytes) {
         final StringBuilder s = new StringBuilder("0x");
         for (final byte b : bytes) {
-            final int highDigit = (((int) b) >> 8) & 15;
-            final int lowDigit = ((int) b) & 15;
+            final int highDigit = (b >> 8) & 15;
+            final int lowDigit = b & 15;
             s.append(Integer.toString(highDigit, 16));
             s.append(Integer.toString(lowDigit, 16));
         }