no need to check for Java5 anymore

src/tests/antunit/taskdefs/javac-test.xml

@@ -220,7 +220,7 @@ public class Adapter implements CompilerAdapter {
       <mkdir dir="${javac-dir}/classes"/>
     </sequential>
     
-    <sequential if:set="jdk1.5+" unless:set="jdk1.9+">
+    <sequential unless:set="jdk1.9+">
       <echo>JDK 1.5+</echo>
       <testJavac source="1.5"/>
       <delete dir="${javac-dir}/classes"/>
@@ -278,7 +278,7 @@ public class Adapter implements CompilerAdapter {
       <mkdir dir="${javac-dir}/classes"/>
     </sequential>
 
-    <sequential if:set="jdk1.5+" unless:set="jdk1.9+">
+    <sequential unless:set="jdk1.9+">
       <echo>JDK 1.5+</echo>
       <testJavac source="1.5" target="1.5"/>
       <delete dir="${javac-dir}/classes"/>

src/tests/antunit/taskdefs/optional/junit/junit-test.xml

@@ -316,7 +316,7 @@ public class BTest extends TestCase {
     </au:expectfailure>
   </target>
 
-  <target name="testTestMethods" if="jdk1.5+">
+  <target name="testTestMethods">
     <condition property="source" value="6">
       <isset property="jdk1.6+"/>
     </condition>