remove git submodules

Author: 05nelsonm

.gitmodules

@@ -1,8 +0,0 @@
-[submodule "external/AndroidPluggableTransports"]
-	path = external/AndroidPluggableTransports
-	url = https://github.com/guardianproject/AndroidPluggableTransports.git
-	branch = master
-[submodule "external/tor-android"]
-	path = external/tor-android
-	url = https://github.com/guardianproject/tor-android.git
-	ignore = all