kconfig: localmodconfig: Remove unused $config

This is unused since commit cdfc47950a53 ("kconfig: search for a config
to base the local(mod|yes)config on").

Having unused $config is confusing because $config is used as a local
variable in various sub-routines.

Link: http://lkml.kernel.org/r/20191217041637.29558-1-masahiroy@kernel.org

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
diff --git a/scripts/kconfig/streamline_config.pl b/scripts/kconfig/streamline_config.pl
index 08d76d7..bbaa1e1 100755
--- a/scripts/kconfig/streamline_config.pl
+++ b/scripts/kconfig/streamline_config.pl
@@ -56,8 +56,6 @@
     print STDERR @_;
 }
 
-my $config = ".config";
-
 my $uname = `uname -r`;
 chomp $uname;