CI: Update build script

before_install_linux.sh

@@ -13,21 +13,13 @@ if [ ! -v IMAGEMAGICK_VERSION ]; then
   exit 1
 fi
 
-sudo apt-get clean
-sudo apt-get update
-
 # remove all existing imagemagick related packages
 sudo apt-get autoremove -y imagemagick* libmagick* --purge
 
 # install build tools, ImageMagick delegates
-sudo apt-get install -y build-essential libfontconfig1-dev libx11-dev libxext-dev zlib1g-dev \
-  liblcms2-dev libpng-dev libjpeg-dev libfreetype6-dev libxml2-dev \
-  libtiff5-dev libwebp-dev liblqr-1-0-dev gsfonts ghostscript wget
-
-if [ ! -d /usr/include/freetype ]; then
-  # If `/usr/include/freetype` is not existed, ImageMagick 6.7 configuration fails about Freetype.
-  sudo ln -sf /usr/include/freetype2 /usr/include/freetype
-fi
+sudo apt-get install -y build-essential libx11-dev libxext-dev zlib1g-dev \
+  liblcms2-dev libpng-dev libjpeg-dev libfreetype6-dev \
+  libtiff5-dev libwebp-dev liblqr-1-0-dev vim gsfonts ghostscript
 
 project_dir=$(pwd)
 build_dir="${project_dir}/build-ImageMagick/ImageMagick-${IMAGEMAGICK_VERSION}"