libchrome: Remove fuzzed_data_provider.

No longer needed to provided in libchrome since
LLVM now includes FuzzedDataProvider.h as part of its builtin
header files.

BUG=chromium:1005307
TEST=fuzzer tryjob passes

Cq-Depend: chromium:1816127
Change-Id: I65a7ebc8f1485115d071db0771d9d2e80392d5f1
3 files changed