Revert "Avoid duplicated classes for boot dex jars"

This reverts commit 2812df4e.

This is no longer required as we have
I6463ebc59cf7fd861b812999d7a79c387bbb3335.

hostdex files are available even when the module doesn't have
"//apex_available:platform"

Bug: 128708192
Test: m
Change-Id: I0d1295683222bc9cdbb82630e61ab3421c717daf