Removing line number from --help flags header.

runtime/src/iree/base/internal/flags.c

diff --git a/runtime/src/iree/base/internal/flags.c b/runtime/src/iree/base/internal/flags.c
index 4aef4e4..ab058e4 100644
--- a/runtime/src/iree/base/internal/flags.c
+++ b/runtime/src/iree/base/internal/flags.c
@@ -418,7 +418,7 @@
                 "# "
                 "===-----------------------------------------------------------"
                 "-----------===\n");
-        fprintf(file, "# Flags in %s:%d\n", flag->file, flag->line);
+        fprintf(file, "# Flags in %s\n", flag->file);
         fprintf(file,
                 "# "
                 "===-----------------------------------------------------------"