Bazel: Remove FileTreeIteratorWithTimeControl from BUILD file

FileTreeIteratorWithTimeControl was deleted in a024759, but was
not removed from the BUILD file, thus causing the bazel build to
fail.

Change-Id: I892c0ffcac947298d0d6009374ee2c5d9afefb66
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>

org.eclipse.jgit.test/BUILD

@@ -19,7 +19,6 @@ HELPERS = glob(["src/**/*.java"]) + [PKG + c for c in [
     "revwalk/RevQueueTestCase.java",
     "revwalk/RevWalkTestCase.java",
     "transport/SpiTransport.java",
-    "treewalk/FileTreeIteratorWithTimeControl.java",
     "treewalk/filter/AlwaysCloneTreeFilter.java",
     "test/resources/SampleDataRepositoryTestCase.java",
     "util/CPUTimeStopWatch.java",