Tiny javadoc fix in ContentChildProcessServiceDelegate

Bug: None
Change-Id: I50ef287f7a31c10735e9c2f2dbe749cbc2bfbab7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1695413Reviewed-by: David Trainor <dtrainor@chromium.org>
Commit-Queue: Egor Pasko <pasko@chromium.org>
Cr-Commit-Position: refs/heads/master@{#676865}

content/public/android/java/src/org/chromium/content/app/ContentChildProcessServiceDelegate.java

@@ -240,7 +240,6 @@ public class ContentChildProcessServiceDelegate implements ChildProcessServiceDe
     /**
      * Initializes the native parts of the service.
      *
-     * @param serviceImpl This ChildProcessService object.
      * @param cpuCount The number of CPUs.
      * @param cpuFeatures The CPU features.
      */