diff --git a/cmake/FindZLIB.cmake b/cmake/FindZLIB.cmake
deleted file mode 100644
index dc8a3e359..000000000
--- a/cmake/FindZLIB.cmake
+++ /dev/null
@@ -1,76 +0,0 @@
-# - Find zlib
-# Find the native ZLIB includes and library.
-# Once done this will define
-#
-#  ZLIB_INCLUDE_DIRS   - where to find zlib.h, etc.
-#  ZLIB_LIBRARIES      - List of libraries when using zlib.
-#  ZLIB_FOUND          - True if zlib found.
-#
-#  ZLIB_VERSION_STRING - The version of zlib found (x.y.z)
-#  ZLIB_VERSION_MAJOR  - The major version of zlib
-#  ZLIB_VERSION_MINOR  - The minor version of zlib
-#  ZLIB_VERSION_PATCH  - The patch version of zlib
-#  ZLIB_VERSION_TWEAK  - The tweak version of zlib
-#
-# The following variable are provided for backward compatibility
-#
-#  ZLIB_MAJOR_VERSION  - The major version of zlib
-#  ZLIB_MINOR_VERSION  - The minor version of zlib
-#  ZLIB_PATCH_VERSION  - The patch version of zlib
-
-#=============================================================================
-# Copyright 2001-2009 Kitware, Inc.
-#
-# Distributed under the OSI-approved BSD License (the "License");
-# see accompanying file Copyright.txt for details.
-#
-# This software is distributed WITHOUT ANY WARRANTY; without even the
-# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-# See the License for more information.
-#=============================================================================
-# (To distribute this file outside of CMake, substitute the full
-#  License text for the above reference.)
-
-find_path(ZLIB_INCLUDE_DIR zlib.h
-  "[HKEY_LOCAL_MACHINE\\SOFTWARE\\GnuWin32\\Zlib;InstallPath]/include"
-)
-
-set(ZLIB_NAMES z zlib zdll zlib1 zlibd zlibd1)
-find_library(ZLIB_LIBRARY
-  NAMES
-  ${ZLIB_NAMES}
-  PATHS
-  "[HKEY_LOCAL_MACHINE\\SOFTWARE\\GnuWin32\\Zlib;InstallPath]/lib"
-)
-mark_as_advanced(ZLIB_LIBRARY ZLIB_INCLUDE_DIR)
-
-if(ZLIB_INCLUDE_DIR AND EXISTS "${ZLIB_INCLUDE_DIR}/zlib.h")
-  file(STRINGS "${ZLIB_INCLUDE_DIR}/zlib.h" ZLIB_H REGEX "^#define ZLIB_VERSION \"[^\"]*\"$")
-
-  string(REGEX REPLACE "^.*ZLIB_VERSION \"([0-9]+).*$" "\\1" ZLIB_VERSION_MAJOR "${ZLIB_H}")
-  string(REGEX REPLACE "^.*ZLIB_VERSION \"[0-9]+\\.([0-9]+).*$" "\\1" ZLIB_VERSION_MINOR  "${ZLIB_H}")
-  string(REGEX REPLACE "^.*ZLIB_VERSION \"[0-9]+\\.[0-9]+\\.([0-9]+).*$" "\\1" ZLIB_VERSION_PATCH "${ZLIB_H}")
-  set(ZLIB_VERSION_STRING "${ZLIB_VERSION_MAJOR}.${ZLIB_VERSION_MINOR}.${ZLIB_VERSION_PATCH}")
-
-  # only append a TWEAK version if it exists:
-  set(ZLIB_VERSION_TWEAK "")
-  if("${ZLIB_H}" MATCHES "^.*ZLIB_VERSION \"[0-9]+\\.[0-9]+\\.[0-9]+\\.([0-9]+).*$")
-    set(ZLIB_VERSION_TWEAK "${CMAKE_MATCH_1}")
-    set(ZLIB_VERSION_STRING "${ZLIB_VERSION_STRING}.${ZLIB_VERSION_TWEAK}")
-  endif()
-
-  set(ZLIB_MAJOR_VERSION "${ZLIB_VERSION_MAJOR}")
-  set(ZLIB_MINOR_VERSION "${ZLIB_VERSION_MINOR}")
-  set(ZLIB_PATCH_VERSION "${ZLIB_VERSION_PATCH}")
-endif()
-
-# handle the QUIETLY and REQUIRED arguments and set ZLIB_FOUND to TRUE if
-# all listed variables are TRUE
-include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(ZLIB REQUIRED_VARS ZLIB_LIBRARY ZLIB_INCLUDE_DIR
-  VERSION_VAR ZLIB_VERSION_STRING)
-
-if(ZLIB_FOUND)
-  set(ZLIB_INCLUDE_DIRS ${ZLIB_INCLUDE_DIR})
-  set(ZLIB_LIBRARIES ${ZLIB_LIBRARY})
-endif()