Revert sharpyuv as standalone subspec because it depends webp as well

libwebp.podspec

@@ -19,12 +19,11 @@ Pod::Spec.new do |s|
     'USER_HEADER_SEARCH_PATHS' => '$(inherited) ${PODS_ROOT}/libwebp/ ${PODS_TARGET_SRCROOT}/'
   }
   s.preserve_paths = 'src', 'sharpyuv'
-  s.default_subspecs = 'webp', 'demux', 'mux', 'sharpyuv'
+  s.default_subspecs = 'webp', 'demux', 'mux'
 
   # webp decoding && encoding
   s.subspec 'webp' do |ss|
-    ss.dependency 'libwebp/sharpyuv'
-    ss.source_files = 'src/webp/decode.h', 'src/webp/encode.h', 'src/webp/types.h', 'src/webp/mux_types.h', 'src/webp/format_constants.h', 'src/utils/*.{h,c}', 'src/dsp/*.{h,c}', 'src/dec/*.{h,c}', 'src/enc/*.{h,c}'
+    ss.source_files = 'src/webp/decode.h', 'src/webp/encode.h', 'src/webp/types.h', 'src/webp/mux_types.h', 'src/webp/format_constants.h', 'src/utils/*.{h,c}', 'src/dsp/*.{h,c}', 'src/dec/*.{h,c}', 'src/enc/*.{h,c}', 'sharpyuv/*.{h,c}'
     ss.public_header_files = 'src/webp/decode.h', 'src/webp/encode.h', 'src/webp/types.h', 'src/webp/mux_types.h', 'src/webp/format_constants.h'
   end
 
@@ -42,12 +41,6 @@ Pod::Spec.new do |s|
     ss.public_header_files = 'src/webp/mux.h'
   end
 
-  # sharpyuv converter
-  s.subspec 'sharpyuv' do |ss|
-    ss.source_files = 'sharpyuv/*.{h,c}'
-    ss.public_header_files = 'sharpyuv/*.h'
-  end
-
   # fix #include <inttypes.h> cause 'Include of non-modular header inside framework module error'
   s.prepare_command = <<-CMD
                       sed -i.bak 's/<inttypes.h>/<stdint.h>/g' './src/webp/types.h'