Remove redundant and misleading check. This could also lead to painful cyclic
deserialization.

llvm-svn: 204695
diff --git a/clang/lib/Serialization/ASTReaderDecl.cpp b/clang/lib/Serialization/ASTReaderDecl.cpp
index 5596bb4..f266eba 100644
--- a/clang/lib/Serialization/ASTReaderDecl.cpp
+++ b/clang/lib/Serialization/ASTReaderDecl.cpp
@@ -2955,7 +2955,7 @@
 
     case UPD_CXX_INSTANTIATED_FUNCTION_DEFINITION: {
       FunctionDecl *FD = cast<FunctionDecl>(D);
-      if (FD->hasBody() || Reader.PendingBodies[FD])
+      if (Reader.PendingBodies[FD])
         // FIXME: Maybe check for ODR violations.
         break;