Update LOVE submodule.

app/src/main/cpp/love

@@ -1 +1 @@
-Subproject commit fc42127510659651ee692ab820992fd978fae92c
+Subproject commit 5670df13b6980afd025cd7e7d442a24499bf86a7

build.gradle

@@ -11,7 +11,3 @@ buildscript {
         // in the individual module build.gradle files
     }
 }
-
-task clean(type: Delete) {
-    delete rootProject.buildDir
-}