clean up tests

Remove t/misc/ as it is not used for anything.
Remove t/robot/ since they are tests for LWP::RobotUA that just happen
to use HTTP::Daemon. They are not tests of HTTP::Daemon itself.
Remove +x flag on t/encoding.t since it is not executable.
Move t/local/http.t to t/basic.t. Its old name was from when all LWP
related modules were packaged together. It is the primary test of
HTTP::Daemon.

Author: haarg

t/local/http.t t/basic.tt/local/http.t renamed to t/basic.t

@@ -41,7 +41,7 @@ else {
     use Config;
     my $perl = $Config{'perlpath'};
     $perl = $^X if $^O eq 'VMS' or -x $^X and $^X =~ m,^([a-z]:)?/,i;
-    open(DAEMON, "$perl t/local/http.t daemon |") or die "Can't exec daemon: $!";
+    open(DAEMON, "$perl t/basic.t daemon |") or die "Can't exec daemon: $!";
 }
 
 use Test;