tools/examples: hardcode #!/usr/bin/python shebang
diff --git a/tools/profile.py b/tools/profile.py
index 084ac63..d1d3d26 100755
--- a/tools/profile.py
+++ b/tools/profile.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python
 # @lint-avoid-python-3-compatibility-imports
 #
 # profile  Profile CPU usage by sampling stack traces at a timed interval.