Remove unused methods.

Author: fangerer

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/cext/capi/CApiContext.java

@@ -43,7 +43,6 @@
 import java.lang.ref.Reference;
 import java.lang.ref.ReferenceQueue;
 import java.lang.ref.WeakReference;
-import java.util.ArrayDeque;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashMap;
@@ -377,26 +376,6 @@ public Object execute(VirtualFrame frame) {
             return PNone.NONE;
         }
 
-        @TruffleBoundary
-        private static NativeObjectReference pollFirst(ArrayDeque<NativeObjectReference> deque) {
-            return deque.pollFirst();
-        }
-
-        @TruffleBoundary
-        private static int size(ArrayList<NativeObjectReference> deque) {
-            return deque.size();
-        }
-
-        @TruffleBoundary
-        private static NativeObjectReference get(ArrayList<NativeObjectReference> deque, int i) {
-            return deque.get(i);
-        }
-
-        @TruffleBoundary
-        private static NativeObjectReference clear(ArrayList<NativeObjectReference> deque, int i) {
-            return deque.set(i, null);
-        }
-
         @Override
         public Signature getSignature() {
             return SIGNATURE;