Get rid of pattern_match function.

This functionality is built into bash through the [[..]] syntax.

chocpkg/chocpkg_functions.sh

@@ -1,18 +1,3 @@
-
-# Check if the specified string matches the glob pattern.
-pattern_match() {
-    pattern="$1"
-
-    case "$2" in
-        $pattern)
-            true
-            ;;
-        *)
-            false
-            ;;
-    esac
-}
-
 # Determine if a given program is in the PATH.
 have_tool() {
     tool=$1

pkgdef/SDL2.sh

@@ -11,7 +11,7 @@ if [ $(uname) = "Darwin" ]; then
 fi
 
 # When targeting Windows, we need to install the directx headers first.
-if [ $(uname) = "Cygwin" ] || pattern_match "*mingw*" "$BUILD_HOST"; then
+if [ $(uname) = "Cygwin" ] || [[ "$BUILD_HOST" = *mingw* ]]; then
     DEPENDENCIES="directx-devel"
     config_options+=" --disable-directx"
 fi