base.bbclass: Drop unneeded dependency

patch depends on unpack
configure depends on patch

We simply don't need a configure dependency on unpack. This simplifies the dependencies of every recipe slightly and should make bitbake slightly faster at resovling dependency graphs.

It also makes the .dot dependency graphs slightly more readable by removing noise.

---

index 9144f9c..57f1c3f 100644
@@ -253,7 +253,7 @@ python base_eventhandler() {
 		return
 }
 
-addtask configure after do_unpack do_patch
+addtask configure after do_patch
 do_configure[dirs] = "${CCACHE_DIR} ${S} ${B}"
 do_configure[deptask] = "do_populate_sysroot"
 base_do_configure() {