Drop unused jdk7 profile from pom.xml.

This is no longer needed after 6bd153e.

Author: aclemons

pom.xml

@@ -49,16 +49,6 @@
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
   </properties>
   <profiles>
-    <profile>
-      <id>jdk17andolder</id>
-      <activation>
-        <jdk>[1.3,1.8)</jdk>
-      </activation>
-      <properties>
-        <maven.compiler.source>1.5</maven.compiler.source>
-        <maven.compiler.target>1.5</maven.compiler.target>
-      </properties>
-    </profile>
     <profile>
       <id>jdk18</id>
       <activation>