Remove troublesome "use lib '.'"

... which lead to failing tests on rakudo.jvm

Author: usev6

S11-modules/require.t

@@ -1,7 +1,5 @@
 use v6;
 
-use lib '.';
-
 my $required-Test = (require Test <&plan &is &lives-ok &skip &todo>);
 
 plan 17;