Remove mix platform build script.
tree7eb03f472fe5676a5bce127595d7c377d9e290d6
-rw-r--r-- 336 .gitignore
-rw-r--r-- 261 .gitmodules
drwxr-xr-x - Languages
-rw-r--r-- 3557 build.txt
drwxr-xr-x - common
drwxr-xr-x - contrib
drwxr-xr-x - doc
drwxr-xr-x - ext
drwxr-xr-x - src