Revert "[libFuzzer] Use custom allocators for STL containers in libFuzzer"

This reverts commit 3539efc2f2218dba2bcbd645d0fe276f2b5cf588.

llvm-svn: 311831
diff --git a/compiler-rt/lib/fuzzer/FuzzerIOPosix.cpp b/compiler-rt/lib/fuzzer/FuzzerIOPosix.cpp
index d283597..c5ebdba 100644
--- a/compiler-rt/lib/fuzzer/FuzzerIOPosix.cpp
+++ b/compiler-rt/lib/fuzzer/FuzzerIOPosix.cpp
@@ -33,7 +33,7 @@
 }
 
 void ListFilesInDirRecursive(const std::string &Dir, long *Epoch,
-                             fuzzer::vector<std::string> *V, bool TopDir) {
+                             std::vector<std::string> *V, bool TopDir) {
   auto E = GetEpoch(Dir);
   if (Epoch)
     if (E && *Epoch >= E) return;