THRIFT-3910 Do not invoke pip as part of build process

This closes #1073
diff --git a/build/cmake/DefineOptions.cmake b/build/cmake/DefineOptions.cmake
index 01dae35..6dd59e0 100644
--- a/build/cmake/DefineOptions.cmake
+++ b/build/cmake/DefineOptions.cmake
@@ -103,9 +103,8 @@
 option(WITH_PYTHON "Build Python Thrift library" ON)
 find_package(PythonInterp QUIET) # for Python executable
 find_package(PythonLibs QUIET) # for Python.h
-find_package(Pip QUIET)
 CMAKE_DEPENDENT_OPTION(BUILD_PYTHON "Build Python library" ON
-                       "BUILD_LIBRARIES;WITH_PYTHON;PYTHONLIBS_FOUND;PIP_FOUND" OFF)
+                       "BUILD_LIBRARIES;WITH_PYTHON;PYTHONLIBS_FOUND" OFF)
 
 # Haskell
 option(WITH_HASKELL "Build Haskell Thrift library" ON)
diff --git a/build/cmake/FindPip.cmake b/build/cmake/FindPip.cmake
deleted file mode 100644
index 45fdb99..0000000
--- a/build/cmake/FindPip.cmake
+++ /dev/null
@@ -1,30 +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.
-#
-
-
-#  PIP_FOUND - system has pip
-#  PIP_EXECUTABLE - the pip executable
-#
-# It will search the PATH environment variable
-
-include(FindPackageHandleStandardArgs)
-
-find_program(PIP_EXECUTABLE NAMES pip)
-find_package_handle_standard_args(PIP DEFAULT_MSG PIP_EXECUTABLE)
-mark_as_advanced(PIP_EXECUTABLE)