do_import_numpy.h no longer needed

Change-Id: I15c0175ec2861623900a74c67a3a36e653842a8b

cpp/src/arrow/python/CMakeLists.txt

@@ -82,7 +82,6 @@ install(FILES
   builtin_convert.h
   common.h
   config.h
-  do_import_numpy.h
   helpers.h
   init.h
   io.h

cpp/src/arrow/python/do_import_numpy.h

@@ -1,21 +0,0 @@
-// Licensed to the Apache Software Foundation (ASF) under one
-// or more contributor license agreements.  See the NOTICE file
-// distributed with this work for additional information
-// regarding copyright ownership.  The ASF licenses this file
-// to you under the Apache License, Version 2.0 (the
-// "License"); you may not use this file except in compliance
-// with the License.  You may obtain a copy of the License at
-//
-//   http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing,
-// software distributed under the License is distributed on an
-// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-// KIND, either express or implied.  See the License for the
-// specific language governing permissions and limitations
-// under the License.
-
-// Trick borrowed from dynd-python for initializing the NumPy array API
-
-// Trigger the array import (inversion of NO_IMPORT_ARRAY)
-#define NUMPY_IMPORT_ARRAY

cpp/src/arrow/python/init.cc

@@ -17,7 +17,8 @@
 
 #include "arrow/python/platform.h"
 
-#include "arrow/python/do_import_numpy.h"
+// Trigger the array import (inversion of NO_IMPORT_ARRAY)
+#define NUMPY_IMPORT_ARRAY
 
 #include "arrow/python/init.h"
 #include "arrow/python/numpy_interop.h"