cronet: remove cronet_java_defaults_enabled_srcs

external/cronet has been added to the default manifest in
tm-mainline-prod, so this soong variable is not needed anymore.

Test: TH
Merged-In: I5750d87c9cab0e9d4d213b5a81a2d71cc9610a08
Change-Id: I5750d87c9cab0e9d4d213b5a81a2d71cc9610a08
1 file changed