Removed duplicated words in in comments and docs.
diff --git a/Python/thread.c b/Python/thread.c
index d1cb0e6..4e695ae 100644
--- a/Python/thread.c
+++ b/Python/thread.c
@@ -221,7 +221,7 @@
goto Done;
}
/* Sanity check. These states should never happen but if
- * they do we must abort. Otherwise we'll end up spinning in
+ * they do we must abort. Otherwise we'll end up spinning
* in a tight loop with the lock held. A similar check is done
* in pystate.c tstate_delete_common(). */
if (p == prev_p)