Delete redundant declarations.

git-svn-id: http://lm-sensors.org/svn/lm-sensors/branches/lm-sensors-3.0.0@4780 7894878c-1315-0410-8ee3-d5d059ff63e0

lib/conf-parse.y

@@ -31,11 +31,6 @@
 #include "access.h"
 #include "init.h"
 
-/* These two functions are defined in conf-lex.l */
-extern int sensors_yylex(void);
-extern char sensors_lex_error[];
-extern int sensors_yylineno;
-
 static void sensors_yyerror(const char *err);
 static sensors_expr *malloc_expr(void);