adwaita-icon-theme: remove install scripts for the loader cache

not sure why this was here in the first place

mingw-w64-adwaita-icon-theme/PKGBUILD

@@ -4,7 +4,7 @@ _realname=adwaita-icon-theme
 pkgbase=mingw-w64-${_realname}
 pkgname="${MINGW_PACKAGE_PREFIX}-${_realname}"
 pkgver=3.38.0
-pkgrel=1
+pkgrel=2
 pkgdesc="GNOME icon theme (mingw-w64)"
 arch=('any')
 url="https://www.gnome.org"

mingw-w64-adwaita-icon-theme/theme-i686.install

@@ -5,9 +5,6 @@ post_install() {
   [[ -f mingw32/bin/gtk-update-icon-cache-3.0.exe ]] && {
     mingw32/bin/gtk-update-icon-cache-3.0 -q -t -f mingw32/share/icons/Adwaita
   }
-  [[ -f mingw32/bin/gdk-pixbuf-query-loaders.exe ]] && {
-    mingw32/bin/gdk-pixbuf-query-loaders.exe --update-cache
-  }
 }
 
 post_upgrade() {

mingw-w64-adwaita-icon-theme/theme-x86_64.install

@@ -5,9 +5,6 @@ post_install() {
   [[ -f mingw64/bin/gtk-update-icon-cache-3.0.exe ]] && {
     mingw64/bin/gtk-update-icon-cache-3.0 -q -t -f mingw64/share/icons/Adwaita
   }
-  [[ -f mingw64/bin/gdk-pixbuf-query-loaders.exe ]] && {
-    mingw64/bin/gdk-pixbuf-query-loaders.exe --update-cache
-  }
 }
 
 post_upgrade() {