Remove patch which is no longer needed.

databases/jdbc-postgresql/patches/patch-aa

@@ -1,13 +0,0 @@
---- build.xml.orig	Sat Sep  8 19:53:58 2001
-+++ build.xml	Sat Sep  8 19:54:45 2001
-@@ -134,9 +134,8 @@
-   </target>
- 
-   <!-- This builds the jar file containing the driver -->
--  <target name="jar" depends="compile,examples">
-+  <target name="jar" depends="compile">
-     <jar jarfile="${jars}/postgresql.jar" basedir="${dest}" includes="${package}/**" excludes="${package}/test/**"/>
--    <jar jarfile="${jars}/postgresql-examples.jar" basedir="${dest}" includes="example/**" />
-   </target>
- 
-   <!--