tools/examples: hardcode #!/usr/bin/python shebang
diff --git a/tools/deadlock_detector.py b/tools/deadlock_detector.py
index cbc0691..573f830 100755
--- a/tools/deadlock_detector.py
+++ b/tools/deadlock_detector.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python
 #
 # deadlock_detector  Detects potential deadlocks (lock order inversions)
 #                    on a running process. For Linux, uses BCC, eBPF.