Remove unused FindCTK.cmake module

Since CTK targets are exported into a CTKConfig.cmake file, there is
no need for such module. It would simply add extra maintenance work
without real advantage.

See #397

Utilities/CMake/FindCTK.cmake

@@ -1,65 +0,0 @@
-###########################################################################
-#
-#  Library:   CTK
-#
-#  Copyright (c) Kitware Inc.
-#
-#  Licensed 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.txt
-#
-#  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.
-#
-###########################################################################
-
-# - Find a CTK installation or build tree.
-# The following variables are set if CTK is found.  If CTK is not
-# found, CTK_FOUND is set to false.
-#  CTK_FOUND         - Set to true when CTK is found.
-#  CTK_USE_FILE      - CMake file to use CTK.
-#  CTK_MAJOR_VERSION - The CTK major version number.
-#  CTK_MINOR_VERSION - The CTK minor version number
-#                       (odd non-release).
-#  CTK_PATCH_VERSION - The CTK patch level
-#                       (meaningless for odd minor).
-#  CTK_INCLUDE_DIRS  - Include directories for CTK
-#  CTK_LIBRARY_DIRS  - Link directories for CTK libraries
-#  CTK_LIBRARIES     - List of libraries
-#
-# The following cache entries must be set by the user to locate VTK:
-#  CTK_DIR  - The directory containing CTKConfig.cmake.
-#             This is either the root of the build tree,
-#             or the lib/ctk directory.  This is the
-#             only cache entry.
-#
-
-# Assume not found.
-set(CTK_FOUND 0)
-
-# Construct consitent error messages for use below.
-set(CTK_DIR_MESSAGE "CTK not found.  Set the CTK_DIR cmake cache entry to the directory containing CTKConfig.cmake.  This is either the root of the build tree, or PREFIX/lib/ctk for an installation.")
-
-# Use the Config mode of the find_package() command to find CTKConfig.
-# If this succeeds (possibly because CTK_DIR is already set), the
-# command will have already loaded CTKConfig.cmake and set CTK_FOUND.
-if(NOT CTK_FOUND)
-  find_package(CTK QUIET NO_MODULE)
-endif()
-
-#-----------------------------------------------------------------------------
-if(NOT CTK_FOUND)
-  # CTK not found, explain to the user how to specify its location.
-  if(CTK_FIND_REQUIRED)
-    message(FATAL_ERROR ${CTK_DIR_MESSAGE})
-  else()
-    if(NOT CTK_FIND_QUIETLY)
-      message(STATUS ${CTK_DIR_MESSAGE})
-    endif()
-  endif()
-endif()