Revert "Hash-based dex cache type array."

Reverting to work around some programs crashing with
    Check failed: handle_scope_iface.Get() != nullptr.
though the reason for the failure not yet understood.

Test: m test-art-host
Bug: 34839984
Bug: 30627598
Bug: 34659969
Bug: 30419309

This reverts commit ec7862283dd49f5a58d0ac45960ce27c2f7671b8.

Change-Id: Ifded663633082f1e59e5b6ff2e026dc559bd6b82
diff --git a/compiler/compiler.h b/compiler/compiler.h
index 908d366..2ca0b77 100644
--- a/compiler/compiler.h
+++ b/compiler/compiler.h
@@ -27,7 +27,6 @@
   class JitCodeCache;
 }
 namespace mirror {
-  class ClassLoader;
   class DexCache;
 }
 
@@ -64,7 +63,7 @@
                                   InvokeType invoke_type,
                                   uint16_t class_def_idx,
                                   uint32_t method_idx,
-                                  Handle<mirror::ClassLoader> class_loader,
+                                  jobject class_loader,
                                   const DexFile& dex_file,
                                   Handle<mirror::DexCache> dex_cache) const = 0;