expat-sys, freetype-sys and servo-fontconfig-sys are embedding C source directories. remove them to ensure system-libs are used. found while reviewing alacritty crates. no changes for alacritty as system-libs were already used.
expat-sys, freetype-sys and servo-fontconfig-sys are embedding C source directories. remove them to ensure system-libs are used. found while reviewing alacritty crates. no changes for alacritty as system-libs were already used.