Perfprofd: Fix test expectations

Test: perfprofd_test
Change-Id: I4d79413c3041d63ca42b65824c4cc093d72bf121
diff --git a/perfprofd/tests/perfprofd_test.cc b/perfprofd/tests/perfprofd_test.cc
index 63d58db..13e2d4b 100644
--- a/perfprofd/tests/perfprofd_test.cc
+++ b/perfprofd/tests/perfprofd_test.cc
@@ -593,7 +593,7 @@
   // Verify log contents. Because of perferr logging containing pids and test paths,
   // it is easier to have three expected parts.
   const std::string expected1 = "W: perf bad exit status 1";
-  const std::string expected2 = "W: /bin/false record";
+  const std::string expected2 = "bin/false record";
   const std::string expected3 = "W: profile collection failed";
 
   // check to make sure log excerpt matches