X11: remove unused urxvt configuration

urxvt is a dated and broken terminal emulator. It fails to render simple
modern glyphs like emojis and powerline. There are much better
alternatives available now like Termite, Alacritty or Kitty.

Signed-off-by: Joe Groocock <me@frebib.net>

X11/xresources

@@ -37,53 +37,3 @@ Xft.hintstyle:  hintfull
 Xft.lcdfilter:  lcddefault
 
 Xcursor.theme: Breeze_Obsidian
-
-!!======================!!
-!! RXVT-unicode setting !!
-!!======================!!
-
-urxvt.depth:                32
-urxvt.internalBorder:       16
-urxvt.blurRadius:           25
-urxvt.saveLines:            10000
-urxvt.preeditType:          Root
-
-urxvt.scrollBar:            false
-urxvt.jumpScroll:           false
-urxvt.scrollTtyOutput:      false
-urxvt.scrollWithBuffer:     true
-urxvt.scrollTtyKeypress:    true
-
-urxvt.altSendsEscape:       true
-xterm.metaSendsEscape:      true
-
-urxvt.termName:             xterm-256color
-
-urxvt.font:                 xft:Source Code Pro:style=regular:size=9
-urxvt.imFont:               xft:Source Code Pro:style=regular:size=9
-urxvt.boldFont:             xft:Source Code Pro:style=bold:size=9
-urxvt.italicFont:           xft:Source Code Pro:style=italic:size=9
-urxvt.boldItalicFont:       xft:Source Code Pro:style=bold,italic:size=9
-
-
-urxvt.iso14755:             false
-urxvt.iso14755_52:          false
-urxvt.perl-ext-common:      default,vtwheel,font-size
-urxvt.url-launcher:         /usr/bin/firefox
-urxvt.matcher.button:       1
-
-urxvt.keysym.C-Up:          font-size:increase
-urxvt.keysym.C-Down:        font-size:decrease
-urxvt.keysym.C-equal:       font-size:reset
-urxvt.keysym.C-slash:       font-size:show
-
-! special
-*.foreground:               #ECEFF1
-*.background:               #002B36
-*.cursorColor:              #5294E2
-*.highlightColor:           #5294E2
-urxvt.background:           [95]#383C4A
-urxvt.scrollColor:          #767B87
-urxvt.dynamicColors:        on
-urxvt.highlightSelection:   true
-urxvt.colorMode:            on