Everywhere: Remove all KERNEL #defines

Author: https://github.com/tcl3
Commit: 5ca2f4dfd7
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/195

AK/Error.cpp

@@ -6,20 +6,11 @@
 
 #include <AK/Error.h>
 
-#ifdef KERNEL
-#    include <AK/Format.h>
-#endif
-
 namespace AK {
 
 Error Error::from_string_view_or_print_error_and_return_errno(StringView string_literal, [[maybe_unused]] int code)
 {
-#ifdef KERNEL
-    dmesgln("{}", string_literal);
-    return Error::from_errno(code);
-#else
     return Error::from_string_view(string_literal);
-#endif
 }
 
 }