Remove unused method from RemoteStore

k9mail-library/src/main/java/com/fsck/k9/mail/store/RemoteStore.java

@@ -161,10 +161,6 @@ public abstract class RemoteStore {
         return false;
     }
 
-    public boolean isSendCapable() {
-        return false;
-    }
-
     public boolean isExpungeCapable() {
         return false;
     }

k9mail-library/src/main/java/com/fsck/k9/mail/store/webdav/WebDavStore.java

@@ -976,11 +976,6 @@ public class WebDavStore extends RemoteStore {
         return dataset;
     }
 
-    @Override
-    public boolean isSendCapable() {
-        return true;
-    }
-
     @Override
     public void sendMessages(List<? extends Message> messages) throws MessagingException {
         WebDavFolder tmpFolder = getFolder(mStoreConfig.getDraftsFolderName());