Fix fuzz tests to work on oss-fuzz

- the tests now build/run/check_build with libfuzzer on oss-fuzz
- centipede is removed as it builds/runs but do not check_build
(timeout due to arguments not parsed correctly)

Bug: oss-fuzz:69508

Change-Id: Id063565fc4cce02fc5e36c7d8499d6de9ff54345

tests/fuzzer/patch.sh

@@ -8,3 +8,5 @@ after="if (data.size() == 0) return;"
 sed -i "s/${before}/${after}/" ./fuzztest/internal/compatibility_mode.cc
 sed -i "s/set(GTEST_HAS_ABSL ON)/set(GTEST_HAS_ABSL OFF)/" \
   ./cmake/BuildDependencies.cmake
+# Fixes https://github.com/google/fuzztest/issues/1192
+git revert --no-commit ed6f817771702bf7823b73498d0e1914475f2313