--- a/src/os/unix/ngx_process_cycle.c
+++ b/src/os/unix/ngx_process_cycle.c
@@ -12,8 +12,6 @@ static void ngx_worker_process_cycle(ngx
 static int ngx_worker_thread_cycle(void *data);
 #endif
 
-static void ngx_delete_pidfile(ngx_cycle_t *cycle);
-
 
 ngx_int_t     ngx_process;
 ngx_pid_t     ngx_pid;
@@ -76,10 +74,6 @@ void ngx_master_process_cycle(ngx_cycle_
         ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx,
                                                ngx_core_module);
 
-        if (ccf->worker_processes == NGX_CONF_UNSET) {
-            ccf->worker_processes = 1;
-        }
-
         if (ngx_process == NGX_PROCESS_MASTER) {
             for (i = 0; i < (ngx_uint_t) ccf->worker_processes; i++) {
                 ngx_spawn_process(cycle, ngx_worker_process_cycle, NULL,
@@ -524,88 +518,3 @@ int ngx_worker_thread_cycle(void *data)
 }
 
 #endif
-
-
-static ngx_int_t ngx_create_pidfile(ngx_cycle_t *cycle, ngx_master_ctx_t *ctx)
-{
-    size_t             len;
-    u_char             pid[NGX_INT64_LEN + 1];
-    ngx_str_t          name;
-    ngx_core_conf_t   *ccf;
-
-    ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
-
-    if (ctx->pid.len) {
-        if (ccf->pid.len == 0) {
-            return NGX_OK;
-        }
-
-        if (ctx->pid.len == ccf->pid.len
-            && ngx_strcmp(ctx->pid.data, ccf->pid.data) == 0)
-        {
-            return NGX_OK;
-        }
-    }
-
-    if (ccf->pid.len == 0) {
-        ccf->pid.len = sizeof(NGINX_PID) - 1;
-        ccf->pid.data = NGINX_PID;
-        ccf->newpid.len = sizeof(NGINX_NEWPID) - 1;
-        ccf->newpid.data = NGINX_NEWPID;
-
-    } else {
-        ccf->newpid.len = ccf->pid.len + sizeof(NGINX_NEWPID_EXT);
-        if (!(ccf->newpid.data = ngx_alloc(ccf->newpid.len, cycle->log))) {
-            return NGX_ERROR;
-        }
-
-        ngx_memcpy(ngx_cpymem(ccf->newpid.data, ccf->pid.data, ccf->pid.len),
-                   NGINX_NEWPID_EXT, sizeof(NGINX_NEWPID_EXT));
-    }
-
-    len = ngx_snprintf((char *) pid, NGX_INT64_LEN + 1, PID_T_FMT, ngx_pid);
-    ngx_memzero(&ctx->pid, sizeof(ngx_file_t));
-    ctx->pid.name = ngx_inherited ? ccf->newpid : ccf->pid;
-    ctx->name = ccf->pid.data;
-
-    ctx->pid.fd = ngx_open_file(ctx->pid.name.data, NGX_FILE_RDWR,
-                                NGX_FILE_CREATE_OR_OPEN);
-
-    if (ctx->pid.fd == NGX_INVALID_FILE) {
-        ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
-                      ngx_open_file_n " \"%s\" failed", ctx->pid.name.data);
-        return NGX_ERROR;
-    }
-
-    if (ngx_write_file(&ctx->pid, pid, len, 0) == NGX_ERROR) {
-        return NGX_ERROR;
-    }
-
-    if (ngx_close_file(ctx->pid.fd) == NGX_FILE_ERROR) {
-        ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
-                      ngx_close_file_n " \"%s\" failed", ctx->pid.name.data);
-    }
-
-    return NGX_OK;
-}
-
-
-static void ngx_delete_pidfile(ngx_cycle_t *cycle)
-{
-    u_char           *name;
-    ngx_core_conf_t  *ccf;
-
-    ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
-
-    if (ngx_inherited && getppid() > 1) {
-        name = ccf->newpid.data;
-
-    } else {
-        name = ccf->pid.data;
-    }
-
-    if (ngx_delete_file(name) == NGX_FILE_ERROR) {
-        ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
-                      ngx_delete_file_n " \"%s\" failed", name);
-    }
-}