Kconfig: remove hz keyword.

tools/kconfig/config.h

@@ -162,7 +162,6 @@ struct  file_list *ftab, *conf_list, **confp, *comp_list, **compp;
 
 int     zone, hadtz;
 int     dst;
-int     hz;
 int     debugging;
 
 int     maxusers;

tools/kconfig/config.y

@@ -170,9 +170,6 @@ Config_spec:
         |
     System_spec
         |
-    HZ NUMBER
-        = { hz = $2; }
-        |
     TIMEZONE NUMBER
         = { zone = 60 * $2; check_tz(); }
         |

tools/kconfig/lang.l

@@ -63,7 +63,6 @@ static struct kt key_words[] = {
     { "dst",            DST },
     { "dumps",          DUMPS },
     { "flags",          FLAGS },
-    { "hz",             HZ },
     { "board",          BOARD },
     { "ldscript",       LDSCRIPT },
     { "architecture",   ARCHITECTURE },

tools/kconfig/mkmakefile.c

@@ -444,8 +444,6 @@ void makefile()
     }
     if (maxusers > 0)
         fprintf(ofp, "PARAM += -DMAXUSERS=%d\n", maxusers);
-    if (hz > 0)
-        fprintf(ofp, "PARAM += -DHZ=%d\n", hz);
 
     if (ldscript)
         fprintf(ofp, "LDSCRIPT = \"%s\"\n", ldscript);