[Java.Interop.Tools.JavaSource] Fix duplication in Remarks generation for property getter/setters

[pjcollins]

See: https://github.com/xamarin/android-api-docs/blob/7fc3d7e079e009db5d29dcf6c4d2ca805cc33874/docs/Mono.Android/en/Android.Animation/ValueAnimator.xml#L1416-L1449

There is some duplication in the extra remarks generated for property getters/setters, specifically around the copyright and links out to Java documentation that we need to clean up.

[jonpryor]

Wasn't this fixed in 0e01fb5?

[pjcollins]

I think it was only fixed for cases with multiple @returns blocks. The problematic docs blob mentioned here was generated after the fix in 0e01fb5 landed, I still need to investigate this case further.

       <remarks>
          <para>Property getter documentation:</para>
          <para>
            <format type="text/html">
              <a href="https://developer.android.com/reference/android/animation/ValueAnimator#getStartDelay()" title="Reference documentation">Java documentation for <code>android.animation.ValueAnimator.getStartDelay()</code>.</a>
            </format>
          </para>
          <para>
                    Portions of this page are modifications based on work created and shared by the 
                    <format type="text/html"><a href="https://developers.google.com/terms/site-policies" title="Android Open Source Project">Android Open Source Project</a></format>
                     and used according to terms described in the 
                    <format type="text/html"><a href="https://creativecommons.org/licenses/by/2.5/" title="Creative Commons 2.5 Attribution License">Creative Commons 2.5 Attribution License.</a></format></para>
          <para>Property setter documentation:</para>
          <para>
            <format type="text/html">
              <a href="https://developer.android.com/reference/android/animation/ValueAnimator#setStartDelay(long)" title="Reference documentation">Java documentation for <code>android.animation.ValueAnimator.setStartDelay(long)</code>.</a>
            </format>
          </para>
          <format type="text/html">
            <a href="https://developer.android.com/reference/android/animation/ValueAnimator#setStartDelay(long)" title="Reference documentation">Java documentation for <code>android.animation.ValueAnimator.setStartDelay(long)</code>.</a>
          </format>
          <a href="https://developer.android.com/reference/android/animation/ValueAnimator#setStartDelay(long)" title="Reference documentation">Java documentation for <code>android.animation.ValueAnimator.setStartDelay(long)</code>.</a>Java documentation for <code>android.animation.ValueAnimator.setStartDelay(long)</code>android.animation.ValueAnimator.setStartDelay(long).<para>
                    Portions of this page are modifications based on work created and shared by the 
                    <format type="text/html"><a href="https://developers.google.com/terms/site-policies" title="Android Open Source Project">Android Open Source Project</a></format>
                     and used according to terms described in the 
                    <format type="text/html"><a href="https://creativecommons.org/licenses/by/2.5/" title="Creative Commons 2.5 Attribution License">Creative Commons 2.5 Attribution License.</a></format></para>
                    Portions of this page are modifications based on work created and shared by the 
                    <format type="text/html"><a href="https://developers.google.com/terms/site-policies" title="Android Open Source Project">Android Open Source Project</a></format><a href="https://developers.google.com/terms/site-policies" title="Android Open Source Project">Android Open Source Project</a>Android Open Source Project
                     and used according to terms described in the 
                    <format type="text/html"><a href="https://creativecommons.org/licenses/by/2.5/" title="Creative Commons 2.5 Attribution License">Creative Commons 2.5 Attribution License.</a></format><a href="https://creativecommons.org/licenses/by/2.5/" title="Creative Commons 2.5 Attribution License">Creative Commons 2.5 Attribution License.</a>Creative Commons 2.5 Attribution License.</remarks>