Removing changes to bundled fmt

Removing changes to the bundled fmt library. The default case
statements will be changed in the upstream library.

Signed-off-by: Ryan Sherlock <sherlock@loftorbital.com>

include/spdlog/fmt/bundled/core.h

@@ -1350,8 +1350,6 @@ FMT_CONSTEXPR_DECL FMT_INLINE auto visit_format_arg(
     return vis(arg.value_.pointer);
   case detail::type::custom_type:
     return vis(typename basic_format_arg<Context>::handle(arg.value_.custom));
-  default:
-    break;
   }
   return vis(monostate());
 }

include/spdlog/fmt/bundled/format.h

@@ -2814,8 +2814,6 @@ FMT_CONSTEXPR const Char* parse_align(const Char* begin, const Char* end,
     case '^':
       align = align::center;
       break;
-    default:
-      break;
     }
     if (align != align::none) {
       if (p != begin) {
@@ -2899,8 +2897,6 @@ FMT_CONSTEXPR const Char* parse_format_specs(const Char* begin, const Char* end,
     handler.on_space();
     ++begin;
     break;
-  default:
-    break;
   }
   if (begin == end) return begin;