7450 loader: Remove historical /boot/boot.conf inclusion.

Reviewed by: Alexander Eremin <a.eremin@nexenta.com>
Reviewed by: Yuri Pankov <yuri.pankov@nexenta.com>
Approved by: Robert Mustacchi <rm@joyent.com>

usr/src/boot/sys/boot/common/interp.c

@@ -100,8 +100,7 @@ interact(const char *rc)
 
     if (rc == NULL) {
 	/* Read our default configuration. */
-	if (include("/boot/loader.rc") != CMD_OK)
-	    include("/boot/boot.conf");
+	include("/boot/loader.rc");
     } else if (*rc != '\0')
 	include(rc);
 

usr/src/boot/sys/boot/common/loader.8

@@ -90,9 +90,7 @@ which is
 default.
 After that,
 .Pa /boot/loader.rc
-is processed if available, and, failing that,
-.Pa /boot/boot.conf
-is read for historical reasons.
+is processed if available.
 These files are processed through the
 .Ic include
 command, which reads all of them into memory before processing them,
@@ -957,10 +955,6 @@ itself.
 Additional
 .Tn FICL
 initialization.
-.It Pa /boot/boot.conf
-.Nm
-bootstrapping script.
-Deprecated.
 .It Pa /boot/defaults/loader.conf
 .It Pa /boot/loader.conf
 .It Pa /boot/loader.conf.local