Remove @nonnull annotations in BiConsumer (#5257)

Author: bloderxd

src/main/java/io/reactivex/functions/BiConsumer.java

@@ -13,8 +13,6 @@
 
 package io.reactivex.functions;
 
-import io.reactivex.annotations.NonNull;
-
 /**
  * A functional interface (callback) that accepts two values (of possibly different types).
  * @param <T1> the first value type
@@ -28,5 +26,5 @@ public interface BiConsumer<T1, T2> {
      * @param t2 the second value
      * @throws Exception on error
      */
-    void accept(@NonNull T1 t1, @NonNull T2 t2) throws Exception;
+    void accept(T1 t1, T2 t2) throws Exception;
 }