s/X::Routine::Banned/X::Method::Banned/

Since we only use the exception for methods now

src/core/Any.pm

@@ -3,7 +3,7 @@ my class Pair { ... }
 my class Range { ... }
 my class X::Bind::Slice { ... }
 my class X::Bind::ZenSlice { ... }
-my class X::Routine::Banned { ... }
+my class X::Method::Banned { ... }
 
 my class Any { # declared in BOOTSTRAP
     # my class Any is Mu {
@@ -266,13 +266,13 @@ my class Any { # declared in BOOTSTRAP
     method KeyBag() { DEPRECATED("'BagHash'"); self.BagHash }
 
     method length is hidden_from_backtrace {
-        fail X::Routine::Banned.new(
+        fail X::Method::Banned.new(
           banned     => ".length",
           didyoumean => ".chars, .graphs or .codes",
         );
     }
     method bytes is hidden_from_backtrace {
-        fail X::Routine::Banned.new(
+        fail X::Method::Banned.new(
           banned     => ".bytes",
           didyoumean => ".encode(\$encoding).bytes",
         );

src/core/Exception.pm

@@ -86,6 +86,14 @@ my class X::Method::InvalidQualifier is Exception {
     }
 }
 
+my class X::Method::Banned is Exception {
+    has $.banned     = "something";
+    has $.didyoumean = "something else";
+    method message() {
+        qq{"$.banned" is banned in Perl 6.
+Did you mean $.didyoumean instead?}
+    }
+}
 
 sub EXCEPTION(|) {
     my Mu $vm_ex   := nqp::shift(nqp::p6argvmarray());
@@ -1050,15 +1058,6 @@ my class X::Augment::NoSuchType does X::Comp {
     method message() { "You tried to augment $.package-kind $.package, but it does not exist" }
 }
 
-my class X::Routine::Banned is Exception {
-    has $.banned     = "something";
-    has $.didyoumean = "something else";
-    method message() {
-        qq{"$.banned" is banned in Perl 6.
-Did you mean $.didyoumean instead?}
-    }
-}
-
 my class X::Routine::Unwrap is Exception {
     method message() { "Cannot unwrap routine: invalid wrap handle" }
 }