vtfpp: rewrite APNG support

Author: craftablescience

THIRDPARTY_LEGAL_NOTICES.txt

@@ -357,31 +357,6 @@ ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 
---------------- uc_apng_loader ---------------
-
-MIT License
-
-Copyright (c) 2017
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
-
-
 ---------------      zlib      ---------------
 
 (C) 1995-2024 Jean-loup Gailly and Mark Adler

ext/_ext.cmake

@@ -92,10 +92,6 @@ add_subdirectory("${CMAKE_CURRENT_LIST_DIR}/stb")
 add_subdirectory("${CMAKE_CURRENT_LIST_DIR}/tinyexr")
 
 
-# uc_apng_loader
-add_subdirectory("${CMAKE_CURRENT_LIST_DIR}/uc_apng_loader")
-
-
 # tbb
 function(sourcepp_add_tbb TARGET)
     if(SOURCEPP_BUILD_WITH_TBB)