Remove doInit(), update javadocs

Signed-off-by: Ryan Nett <rnett@calpoly.edu>

Author: rnett

tensorflow-core/tensorflow-core-api/src/gen/annotations/org/tensorflow/op/Ops.java

@@ -2755,7 +2755,7 @@ public Init init() {
    *
    *  <p>Registered initializers are then grouped as a single unit of computation by adding
    *  and executing an {@link org.tensorflow.op.core.Init#create(Scope) init} operation from a graph
-   *  session.  No-ops if the session is eager.
+   *  session.  This is a no-op if executed in an eager session.
    *
    * @param scope
    * @param initializer

tensorflow-core/tensorflow-core-api/src/main/java/org/tensorflow/Session.java

@@ -293,16 +293,6 @@ public Runner addTarget(Op op) {
       return addTarget(op.op());
     }
 
-    /**
-     * Make {@link #run} execute the graph's initializers.
-     *
-     * @return this session runner
-     */
-    public Runner doInitialization(){
-      graph.initializers().forEach(this::addTarget);
-      return this;
-    }
-
     /**
      * Set options (typically for debugging) for this run.
      *

tensorflow-core/tensorflow-core-api/src/main/java/org/tensorflow/op/core/Init.java

@@ -89,7 +89,7 @@ public static Init create(Scope scope) {
    *
    * <p>Registered initializers are then grouped as a single unit of computation by adding
    * and executing an {@link org.tensorflow.op.core.Init#create(Scope) init} operation from a graph
-   * session.  No-ops if the session is eager.
+   * session.  This is a no-op if executed in an eager session.
    *
    * @param scope
    * @param initializer