Allow 2.4 to fallback to alpine latest

FreekingDean · FreekingDean · commit 06881d7ebd92 · 2018-04-03T14:37:40.000-04:00
diff --git a/generate-stackbrew-library.sh b/generate-stackbrew-library.sh
@@ -16,7 +16,6 @@ defaultAlpineVersion='3.7'
 declare -A alpineVersions=(
 	[2.2]='3.4'
 	[2.3]='3.4'
-	[2.4]='3.4'
 )
 
 self="$(basename "$BASH_SOURCE")"
