extra: Remove snapshot build type from build.sh

We don't use it anymore.

extra/scripts/build.sh

@@ -40,13 +40,12 @@ usage_and_exit() {
 Usage: $0 -d DIRECTORY -m MODE [-j THREADS]
        $0 debug [-j THREADS]    ( shortcut for => $0 -d debug -m Debug [-j THREADS] )
        $0 release [-j THREADS]  ( shortcut for => $0 -d release -m Release [-j THREADS] )
-       $0 snapshot [-j THREADS] ( shortcut for => $0 -d snapshot -m Snapshot [-j THREADS] )
 Algorithms Library Core builder helper script.
 Arguments:
  -d DIRECTORY   Build directory (relative to ALT root)
- -m MODE        'Release' or 'Debug' or 'Snapshot'
+ -m MODE        'Release' or 'Debug'
  -j THREADS     Number of build threads. Default: Number of CPU cores ($(grep -c processor /proc/cpuinfo))
  -n             Do not run tests
 EOF
@@ -59,15 +58,12 @@ installed_or_exit "make" "ninja"
 # check if shortcut
 ARGS_SHORTCUT=
-if [[ $# -ge 1 ]] && [[ $1 == "release" || $1 == "debug" || $1 == "snapshot" ]]; then
+if [[ $# -ge 1 ]] && [[ $1 == "release" || $1 == "debug" ]]; then
 	ARGS_SHORTCUT=1
 	if [[ $1 == "release" ]]; then
 		BUILD_DIR="release"
 		BUILD_MODE="Release"
-	elif [[ $1 == "snapshot" ]]; then
-		BUILD_DIR="snapshot"
-		BUILD_MODE="Snapshot"
 	elif [[ $1 == "debug" ]]; then
 		BUILD_DIR="debug"
 		BUILD_MODE="Debug"
@@ -92,8 +88,6 @@ while getopts "d:m:j:n" arg; do
 				BUILD_MODE="Debug"
 			elif [[ "$TMP" == "release" ]]; then
 				BUILD_MODE="Release"
-			elif [[ "$TMP" == "snapshot" ]]; then
-				BUILD_MODE="Snapshot"
 			else
 				usage_and_exit
 			fi