GN: Stop setting android.jar in both -classpath and -bootclasspath
GN: Stop setting android.jar in both -classpath and -bootclasspath

I don't think it's necessary.

BUG=

Review URL: https://codereview.chromium.org/1328793003

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#347330}

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