Fix SignalHandlerTest signal handler output parsing

Summary: Fix SignalHandlerTest signal handler output parsing since we do not need to print the "maybe from PID" message

Reviewed By: yfeldblum, mjoras

Differential Revision: D14399778

fbshipit-source-id: a5192c0427fa79479218ebb4671dee4164448111

folly/experimental/symbolizer/test/SignalHandlerTest.cpp

@@ -54,7 +54,6 @@ TEST(SignalHandler, Simple) {
       "\\*\\*\\*\n"
       "\\*\\*\\* Signal 11 \\(SIGSEGV\\) \\(0x2a\\) received by PID [0-9]+ "
       "\\(pthread TID 0x[0-9a-f]+\\) \\(linux TID [0-9]+\\) "
-      "\\(maybe from PID [0-9]+, UID [0-9]+\\) "
       "\\(code: address not mapped to object\\), "
       "stack trace: \\*\\*\\*\n"
       ".*\n"