Refactor config - throw away the last remains of '--test-sanity'

Reviewed-by: NViktor Dukhovni <viktor@openssl.org>

Configure

@@ -14,7 +14,7 @@ use File::Spec::Functions;
 
 # see INSTALL for instructions.
 
-my $usage="Usage: Configure [no-<cipher> ...] [enable-<cipher> ...] [experimental-<cipher> ...] [-Dxxx] [-lxxx] [-Lxxx] [-fxxx] [-Kxxx] [no-hw-xxx|no-hw] [[no-]threads] [[no-]shared] [[no-]zlib|zlib-dynamic] [no-asm] [no-dso] [no-egd] [sctp] [386] [--prefix=DIR] [--openssldir=OPENSSLDIR] [--with-xxx[=vvv]] [--test-sanity] [--config=FILE] os/compiler[:flags]\n";
+my $usage="Usage: Configure [no-<cipher> ...] [enable-<cipher> ...] [experimental-<cipher> ...] [-Dxxx] [-lxxx] [-Lxxx] [-fxxx] [-Kxxx] [no-hw-xxx|no-hw] [[no-]threads] [[no-]shared] [[no-]zlib|zlib-dynamic] [no-asm] [no-dso] [no-egd] [sctp] [386] [--prefix=DIR] [--openssldir=OPENSSLDIR] [--with-xxx[=vvv]] [--config=FILE] os/compiler[:flags]\n";
 
 # Options:
 #
@@ -30,9 +30,6 @@ my $usage="Usage: Configure [no-<cipher> ...] [enable-<cipher> ...] [experimenta
 #               default).  This needn't be set in advance, you can
 #               just as well use "make INSTALL_PREFIX=/whatever install".
 #
-# --test-sanity Make a number of sanity checks on the data in this file.
-#               This is a debugging tool for OpenSSL developers.
-#
 # --cross-compile-prefix Add specified prefix to binutils components.
 #
 # --api         One of 0.9.8, 1.0.0 or 1.1.0.  Do not compile support for