Remove previous deprecated methods;

Author: fluentfuture

mug/src/main/java/com/google/mu/util/Substring.java

@@ -919,12 +919,6 @@ public String before() {
       return context.substring(0, startIndex);
     }
 
-    /** Use {@link #before} instead. */
-    @Deprecated
-    public String getBefore() {
-      return before();
-    }
-
     /**
      * Returns the part of the original string before the matched substring.
      *
@@ -941,12 +935,6 @@ public String after() {
       return context.substring(endIndex);
     }
 
-    /** Use {@link #after} instead. */
-    @Deprecated
-    public String getAfter() {
-      return after();
-    }
-
     /** Return the full string being matched against. */
     public String fullString() {
       return context;

mug/src/main/java/com/google/mu/util/graph/CycleDetector.java

@@ -44,12 +44,6 @@ public final BiIteration<L, R> yield(Continuation continuation) {
     return this;
   }
 
-  /** @deprecated Use {@link #iterate} instead. */
-  @Deprecated
-  public final BiStream<L, R> stream() {
-    return iterate();
-  }
-
   /**
    * Starts iteration over the {@link #yield yielded} pairs.
    *

mug/src/main/java/com/google/mu/util/stream/BiIteration.java

@@ -251,12 +251,6 @@ public final Iteration<T> yield(
     });
   }
 
-  /** @deprecated Use {@link #iterate} instead. */
-  @Deprecated
-  public final Stream<T> stream() {
-    return iterate();
-  }
-
   /**
    * Starts iteration over the {@link #yield yielded} elements.
    *

mug/src/main/java/com/google/mu/util/stream/Iteration.java

@@ -312,17 +312,6 @@ public static Stream<Integer> indexesFrom(int firstIndex) {
     return IntStream.iterate(firstIndex, i -> i + 1).boxed();
   }
 
-  /**
-   * @deprecated Use {@code whileNotNull(queue::poll)} in place of {@code
-   * whileNotEmpty(queue).map(Queue::remove)}, and {@code whileNotNull(stack::poll)} in place of
-   * {@code whileNotEmpty(stack).map(Deque::poll)}.
-   */
-  @Deprecated
-  public static <C extends Collection<?>> Stream<C> whileNotEmpty(C collection) {
-    requireNonNull(collection);
-    return whileNotNull(() -> collection.isEmpty() ? null : collection);
-  }
-
   /**
    * Similar to {@link Stream#generate}, returns an infinite, sequential, unordered, and non-null
    * stream where each element is generated by the provided Supplier. The stream however will