ci: turn off FuzzBuzz

I don't think anyone uses it.

src/fuzz/fuzz.h

@@ -6,6 +6,3 @@
 
 /* The entry point into the fuzzer */
 int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size);
-
-/* https://docs.fuzzbuzz.io/developer-documentation/porting-targets-to-fuzzbuzz/libfuzzer-targets */
-int FuzzerEntrypoint(const uint8_t *data, size_t size);

src/fuzz/fuzzer-entry-point.c

@@ -1,5 +0,0 @@
-#include "fuzz.h"
-
-int FuzzerEntrypoint(const uint8_t *data, size_t size) {
-        return LLVMFuzzerTestOneInput(data, size);
-}

src/test/meson.build

@@ -1026,10 +1026,7 @@ tests += [
 
 ]
 
-# test-bus-vtable-cc.cc is a symlink and symlinks get lost in containers on FuzzBuzz.
-# The issue has been reported to the developers of FuzzBuzz and hopefully will be fixed soon.
-# In the meantime, let's just skip the symlink there.
-if cxx_cmd != '' and not want_fuzzbuzz
+if cxx_cmd != ''
         tests += [
                 [['src/libsystemd/sd-bus/test-bus-vtable-cc.cc'],
                  [],