Merge pull request #205 from FreekingDean/chore/update-2.4-alpine-to-3.7

Allow 2.4 to fallback to alpine latest

Author: tianon

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")"