Simplify ab.cmd

android/ab.cmd

@@ -5,6 +5,4 @@ copy ..\assets\langregion.ini assets\langregion.ini
 copy ..\assets\*.png assets
 SET NDK=C:\AndroidNDK
 SET NDK_MODULE_PATH=..;..\native\ext
-REM Need to force target-platform to android-9 to get access to OpenSL headers.
-REM Hopefully this won't negatively affect anything else.
-%NDK%/ndk-build TARGET_PLATFORM=android-9 -j9 %1
+%NDK%/ndk-build -j9 %1

android/ab.sh

@@ -3,4 +3,4 @@ cp -r ../lang assets
 cp -r ../assets/shaders assets
 cp ../assets/langregion.ini assets/langregion.ini
 cp ../assets/*.png assets
-NDK_MODULE_PATH=..:../native/ext $NDK/ndk-build -j3 TARGET_PLATFORM=android-9 $*
+NDK_MODULE_PATH=..:../native/ext $NDK/ndk-build -j3 $*