[CURL] Remove unnecessary renaming.

[Neumann-A]

CMake updated the FindCURL module and the renaming is no longer required.

From FindCURL.cmake in CMake:

  find_library(CURL_LIBRARY_RELEASE NAMES
      curl
    # Windows MSVC prebuilts:
      curllib
      libcurl_imp
      curllib_static
    # Windows older "Win32 - MSVC" prebuilts (libcurl.lib, e.g. libcurl-7.15.5-win32-msvc.zip):
      libcurl
      HINTS ${PC_CURL_LIBRARY_DIRS}
  )
  mark_as_advanced(CURL_LIBRARY_RELEASE)

  find_library(CURL_LIBRARY_DEBUG NAMES
    # Windows MSVC CMake builds in debug configuration on vcpkg:
      libcurl-d_imp
      libcurl-d
      HINTS ${PC_CURL_LIBRARY_DIRS}
  )
  mark_as_advanced(CURL_LIBRARY_DEBU

[Neumann-A]

regressions? probably a few ports which come with there own FindCURL module which can simply be removed.

[NancyLi1013]

Hi @Neumann-A, thanks for your PR. Here are some regressions from the current CI system:

x64-windows	master	test	notes
libideviceactivation	Pass	Fail	Regression
gdal	Pass	Fail	Regression
idevicerestore	Pass	Fail	Regression

x64-windows-static	master	test	notes
curl	Pass	Fail	Regression

x64-osx	master	test	notes
curl	Pass	Fail	Regression

x86-windows	master	test	notes
libideviceactivation	Pass	Fail	Regression
gdal	Pass	Fail	Regression
idevicerestore	Pass	Fail	Regression

x64-linux	master	test	notes
curl	Pass	Fail	Regression

failureLogs.zip