Remove now-outdated browser config for favicons

assets/favicons/browserconfig.xml

-{{- /* get chosen colour */ -}}
-{{- $colour := $.Site.Params.colour }}
-
-{{- /* set favicon colour to blue by default*/ -}}
-  {{- $faviconColour := .Site.Data.themeColoursStormBlue.colour50 }}
-  {{- $themeColour := .Site.Data.themeColoursStormBlue.colour80 }}
-
-{{- /* replace the favicon colour from the colour data file if the chosen colour is not storm-blue */ -}}
-{{- if eq $colour "amberOrange" }}
-  {{- $faviconColour = .Site.Data.themeColoursAmberOrange.colour50 }}
-  {{- $themeColour = .Site.Data.themeColoursAmberOrange.colour80 }}
-{{- else if eq $colour "ash-beige" }}
-  {{- $faviconColour = .Site.Data.themeColoursAshBeige.colour50 }}
-  {{- $themeColour = .Site.Data.themeColoursAshBeige.colour80 }}
-{{- else if eq $colour "lavender-blue" }}
-  {{- $faviconColour = .Site.Data.themeColoursLavenderBlue.colour50 }}
-  {{- $themeColour = .Site.Data.themeColoursLavenderBlue.colour80 }}
-{{- else if eq $colour "lilac-pink" }}
-  {{- $faviconColour = .Site.Data.themeColoursLilacPink.colour50 }}
-  {{- $themeColour = .Site.Data.themeColoursLilacPink.colour80 }}
-{{- else if eq $colour "lime-green" }}
-  {{- $faviconColour = .Site.Data.themeColoursLimeGreen.colour50 }}
-  {{- $themeColour = .Site.Data.themeColoursLimeGreen.colour80 }}
-{{- else if eq $colour "mustardYellow" }}
-  {{- $faviconColour = .Site.Data.themeColoursMustardYellow.colour50 }}
-  {{- $themeColour = .Site.Data.themeColoursMustardYellow.colour80 }}
-{{- else if eq $colour "olive-green" }}
-  {{- $faviconColour = .Site.Data.themeColoursOliveGreen.colour50 }}
-  {{- $themeColour = .Site.Data.themeColoursOliveGreen.colour80 }}
-{{- else if eq $colour "plum-pink" }}
-  {{- $faviconColour = .Site.Data.themeColoursPlumPink.colour50 }}
-  {{- $themeColour = .Site.Data.themeColoursPlumPink.colour80 }}
-{{- else if eq $colour "sea-blue" }}
-  {{- $faviconColour = .Site.Data.themeColoursSeaBlue.colour50 }}
-  {{- $themeColour = .Site.Data.themeColoursSeaBlue.colour80 }}
-{{- else if eq $colour "steel-grey" }}
-  {{- $faviconColour = .Site.Data.themeColoursSteelGrey.colour50 }}
-  {{- $themeColour = .Site.Data.themeColoursSteelGrey.colour80 }}
-{{- end -}}
-{{- $mstile := "/favicons/mstile-150x150.png" -}}
-{{- if (fileExists "static/mstile-150x150.png") }}{{- else }}
-  {{- $mstile = "/mstile-150x150.png" -}}
-{{- end }}
-<?xml version="1.0" encoding="utf-8"?>
-<browserconfig>
-    <msapplication>
-        <tile>
-            <square150x150logo src="{{ $mstile }}"/>
-            <TileColor>{{ $faviconColour }}</TileColor>
-        </tile>
-    </msapplication>
-</browserconfig>
\ No newline at end of file