Nixed database stuff & Depot depend.

I wasn't thinking clearly when I introduced that Depot depend. ooo-util is
*just* supposed to depend on Guava and samskivert and the fact that it was able
to do DB stuff because of samskivert's (unfortunate) database stuff was an
unhappy accident. ooo-util is really for only the most generic utility stuff.

I'm creating a new library, ooo-db which extends ooo-util with database stuff,
and OOO projects that do database things (which is not Narya, Nenya, Vilya &c)
can depend on ooo-db instead of ooo-util and they'll get a sensible Depot in
addition to a sensible Guava and samskivert.

 don't want to all of a sudden foist a Depot on all the non-Depot needing
libraries that happen to already depend on ooo-util.

pom.xml

@@ -47,11 +47,6 @@
       <artifactId>samskivert</artifactId>
       <version>1.9</version>
     </dependency>
-    <dependency>
-      <groupId>com.samskivert</groupId>
-      <artifactId>depot</artifactId>
-      <version>1.7</version>
-    </dependency>
     <dependency>
       <groupId>com.google.guava</groupId>
       <artifactId>guava</artifactId>
@@ -63,12 +58,6 @@
       <version>2.5</version>
       <scope>provided</scope>
     </dependency>
-    <dependency>
-      <groupId>postgresql</groupId>
-      <artifactId>postgresql</artifactId>
-      <version>8.3-606.jdbc4</version>
-      <scope>provided</scope>
-    </dependency>
   </dependencies>
 
   <build>