Build: Fix build for Java 1.6

Author: rozza

config/codenarc/codenarc.xml

@@ -9,6 +9,9 @@
         <rule-config name='MisorderedStaticImports'>
             <property name='comesBefore' value='false'/>
         </rule-config>
+        <rule-config name='NoWildcardImports'>
+            <property name='doNotApplyToFilesMatching' value='AsynchronousChannelHelperSmokeTestSpecification.groovy'/>
+        </rule-config>
     </ruleset-ref>
 
     <ruleset-ref path='rulesets/basic.xml'/>

driver-async/src/test/functional/com/mongodb/async/client/gridfs/helpers/AsynchronousChannelHelperSmokeTestSpecification.groovy

@@ -26,12 +26,8 @@ import org.bson.Document
 import spock.lang.Requires
 
 import java.nio.ByteBuffer
-import java.nio.channels.AsynchronousFileChannel
-import java.nio.file.Files
-import java.nio.file.NoSuchFileException
-import java.nio.file.Path
-import java.nio.file.Paths
-import java.nio.file.StandardOpenOption
+import java.nio.channels.*  // Wildcard import to work around Java 1.6
+import java.nio.file.*      // Wildcard import to work around Java 1.6
 
 import static GridFSTestHelper.TestAsynchronousByteChannel
 import static GridFSTestHelper.run
@@ -89,7 +85,7 @@ class AsynchronousChannelHelperSmokeTestSpecification extends FunctionalSpecific
         if (outputPath) {
             try {
                 Files.delete(outputPath)
-            } catch (NoSuchFileException e) {
+            } catch (IOException e) {
                 println(e.getMessage())
             }
         }