Removed ctx.ndk_is_crystax

Replaced with kived's method

Author: inclement

pythonforandroid/build.py

@@ -126,11 +126,6 @@ def ndk_ver(self):
     def ndk_ver(self, value):
         self._ndk_ver = value
 
-    @property
-    def ndk_is_crystax(self):
-        return True if self.ndk_ver[:7] == 'crystax' else False
-
-
     @property
     def sdk_dir(self):
         '''The path to the Android SDK.'''

pythonforandroid/recipe.py

@@ -937,7 +937,7 @@ def __init__(self, *args, **kwargs):
 
     def prebuild_arch(self, arch):
         super(TargetPythonRecipe, self).prebuild_arch(arch)
-        if self.from_crystax and not self.ctx.ndk_is_crystax:
+        if self.from_crystax and self.ctx.ndk != 'crystax':
             error('The {} recipe can only be built when '
                   'using the CrystaX NDK. Exiting.'.format(self.name))
             exit(1)