Remove gBn/sConstructorMap.

Test: boot fugu, 2016/2017 Pixel
Bug: 69122224
Change-Id: I525574228bc5f3720901d884fe041597a00ddc77
diff --git a/transport/HidlPassthroughSupport.cpp b/transport/HidlPassthroughSupport.cpp
index b79d21c..18ef1c0 100644
--- a/transport/HidlPassthroughSupport.cpp
+++ b/transport/HidlPassthroughSupport.cpp
@@ -37,10 +37,7 @@
     }
     auto func = getBsConstructorMap().get(myDescriptor, nullptr);
     if (!func) {
-        func = gBsConstructorMap.get(myDescriptor, nullptr);
-        if (!func) {
-            return nullptr;
-        }
+        return nullptr;
     }
 
     sp<IBase> base = func(static_cast<void*>(iface.get()));