vec: remove BaseIter implementation

I removed the `static-method-test.rs` test because it was heavily based
on `BaseIter` and there are plenty of other more complex uses of static
methods anyway.

src/librustpkg/workspace.rs

@@ -25,7 +25,7 @@ pub fn each_pkg_parent_workspace(pkgid: &PkgId, action: &fn(&Path) -> bool) -> b
                    pkgid.remote_path.to_str(),
                    rust_path().to_str());
     }
-    for workspaces.each |ws| {
+    for workspaces.iter().advance |ws| {
         if action(ws) {
             break;
         }
@@ -36,4 +36,4 @@ pub fn each_pkg_parent_workspace(pkgid: &PkgId, action: &fn(&Path) -> bool) -> b
 pub fn pkg_parent_workspaces(pkgid: &PkgId) -> ~[Path] {
     rust_path().filtered(|ws|
         workspace_contains_package_id(pkgid, ws))
-}
+}