Remove obsolete workaround.

RELNOTES=n/a
PiperOrigin-RevId: 617544537

jimfs/src/test/java/com/google/common/jimfs/DirectoryTest.java

@@ -221,15 +221,8 @@ public void testSnapshot() {
     root.link(Name.simple("bar"), regularFile(10));
     root.link(Name.simple("abc"), regularFile(10));
 
-    /*
-     * If we inline this into the assertThat call below, javac resolves it to assertThat(SortedSet),
-     * which isn't available publicly. Our internal build system considers that to be an error, even
-     * though the code will compile fine externally by resolving to assertThat(Iterable) instead. So
-     * we avoid that by assigning to a non-SortedSet type here.
-     */
-    ImmutableSet<Name> snapshot = root.snapshot();
     // does not include . or .. and is sorted by the name
-    assertThat(snapshot)
+    assertThat(root.snapshot())
         .containsExactly(Name.simple("abc"), Name.simple("bar"), Name.simple("foo"))
         .inOrder();
   }