Issue #9315: Revert r83005 before renaming test_trace to

test_sys_settrace and test_profilehooks to test_sys_setprofile in all
three branches.

diff --git a/Lib/test/test_line_tracing.py b/Lib/test/test_trace.py
similarity index 100%
rename from Lib/test/test_line_tracing.py
rename to Lib/test/test_trace.py