build: remove icelandic language from windows installer to fix CI build

Author: Curtis Hall

installer/windows-installer.iss

@@ -43,7 +43,6 @@ Name: "finnish"; MessagesFile: "compiler:Languages\Finnish.isl"
 Name: "french"; MessagesFile: "compiler:Languages\French.isl"
 Name: "german"; MessagesFile: "compiler:Languages\German.isl"
 Name: "hebrew"; MessagesFile: "compiler:Languages\Hebrew.isl"
-Name: "icelandic"; MessagesFile: "compiler:Languages\Icelandic.isl"
 Name: "italian"; MessagesFile: "compiler:Languages\Italian.isl"
 Name: "japanese"; MessagesFile: "compiler:Languages\Japanese.isl"
 Name: "norwegian"; MessagesFile: "compiler:Languages\Norwegian.isl"