Remove @return jdoc that has no info

Change-Id: I4b136102646dff505d38670648afb03b4037bf80

src/main/java/com/android/tools/r8/R8Command.java

diff --git a/src/main/java/com/android/tools/r8/R8Command.java b/src/main/java/com/android/tools/r8/R8Command.java
index 66c02e9..a39e433 100644
--- a/src/main/java/com/android/tools/r8/R8Command.java
+++ b/src/main/java/com/android/tools/r8/R8Command.java
@@ -272,7 +272,6 @@
      * <p>Note that any subsequent calls to this method will replace the previous setting.
      *
      * @param proguardSeedsConsumer Consumer to receive seeds information.
-     * @return
      */
     public Builder setProguardSeedsConsumer(StringConsumer proguardSeedsConsumer) {
       this.proguardSeedsConsumer = proguardSeedsConsumer;
@@ -285,7 +284,6 @@
      * <p>Note that any subsequent calls to this method will replace the previous setting.
      *
      * @param proguardConfigurationConsumer
-     * @return
      */
     public Builder setProguardConfigurationConsumer(StringConsumer proguardConfigurationConsumer) {
       this.proguardConfigurationConsumer = proguardConfigurationConsumer;

src/main/java/com/android/tools/r8/dexsplitter/DexSplitter.java

diff --git a/src/main/java/com/android/tools/r8/dexsplitter/DexSplitter.java b/src/main/java/com/android/tools/r8/dexsplitter/DexSplitter.java
index 4b89d9e..bdb6155 100644
--- a/src/main/java/com/android/tools/r8/dexsplitter/DexSplitter.java
+++ b/src/main/java/com/android/tools/r8/dexsplitter/DexSplitter.java
@@ -196,7 +196,6 @@
    * Default to use the name of the jar file if the argument contains no ':', if the argument
    * contains ':', then use the value after the ':' as the name.
    * @param argument
-   * @return
    */
   private static FeatureJar parseFeatureJarArgument(String argument) {
     if (argument.contains(":")) {