meta: Remove XDG_CURRENT_DESKTOP=KDE

This was cool when we had KDE-specific applications, but since I'm
prioritizing ranger and nautilus now, dolphin isn't needed. Since I'm
focusing heavily on terminal and web-based applications, there is less
need to customize KDE applications specifically.

Two other advantages to this is that I no longer have to manually update
the colors in kdeglobals, and most if not all of the environment can be
programmatically set up with minimal effort.

fish/.config/fish/config.fish

@@ -13,8 +13,6 @@ export GIT_DISCOVERY_ACROSS_FILESYSTEM=1
 
 export SSH_AUTH_SOCK="$XDG_RUNTIME_DIR/ssh-agent.socket"
 
-export XDG_CURRENT_DESKTOP="KDE"
-
 # Use rg instead of ag / ack / grep for fzf (much faster)
 export FZF_DEFAULT_COMMAND='rg --files --no-ignore --hidden --follow --glob "!.git/*"'
 export FZF_DEFAULT_OPTS='--height 40% --reverse --border --color=16'

rofi/.config/rofi/launch.sh

@@ -51,7 +51,6 @@ CURSOR_SIZE=$((16 * $ROFI_SCALE))
 xsetroot -xcf "/usr/share/icons/$CURSOR_THEME/cursors/left_ptr" "$CURSOR_SIZE"
 
 env \
-  XDG_CURRENT_DESKTOP="KDE" \
   QT_AUTO_SCREEN_SCALE_FACTOR="0" \
   QT_FONT_DPI="$ROFI_DPI" \
   QT_SCREEN_SCALE_FACTORS="VGA-1=$ROFI_SCALE;" \