Revert "Document $*KERNEL.hostname"

Author: ugexe

doc/Type/Kernel.pod6

@@ -61,12 +61,6 @@ Returns a C<Str> type object if the "desc" could not be established.
 Instance method returning the hardware information of the Kernel object.  Dies
 if the hardware information could not be established.
 
-=head2 method hostname
-
-    method hostname(--> Str)
-
-Instance method returning the hostname of the Kernel object.
-
 =head2 method name
 
     method name(--> Str)