delete unused fire and underground images, add london tube font file

FAC-11 · BartBucknill · Jul 16, 2017 · Jul 16, 2017 · Jul 16, 2017 · 6788bf011fa93f36447c527edc87e589c0a0b851
commit 6788bf011fa93f36447c527edc87e589c0a0b851
diff --git a/resources/London-Tube.ttf b/resources/London-Tube.ttf
diff --git a/resources/fire-tunnel.jpg b/resources/fire-tunnel.jpg
diff --git a/resources/fire.jpg b/resources/fire.jpg
diff --git a/resources/underground-symbol.png b/resources/underground-symbol.png