Do not find GPC and NetCDF

The programs in this project do not depend directly on them. If they
are secondary dependencies, it is the responsibilty of the primary
dependencies to find them.

CMakeLists.txt

@@ -2,7 +2,6 @@ cmake_minimum_required(VERSION 3.18)
 project(Detection_eddies LANGUAGES Fortran)
 set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS Debug Release Profile)
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}")
-find_package(NetCDF REQUIRED)
 find_package(NetCDF_Fortran REQUIRED)
 find_package(MPI)
 
@@ -15,7 +14,6 @@ if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME)
   find_package(Geometry REQUIRED CONFIG)
   find_package(Numer_Rec_95 REQUIRED CONFIG)
   find_package(GPC_F REQUIRED CONFIG)
-  find_package(GPC REQUIRED CONFIG)
 endif()
 
 if(NOT TARGET fortranGIS)