Revert "[build][package] Add support to compile cml files."

This reverts commit d957d81b.

Reason for revert:  Unable to start hello world component

[00055.025] 14138:14201> [component_manager] ERROR: Failed to bind to root component: ResolverError { err: ManifestNotAvailable { uri: "fuchsia-pkg://fuchsia.com/hello_world_hippo#meta/hello_world.cm", err: ClientRead(Status(PEER_CLOSED)) } }

Original change's description:
> [build][package] Add support to compile cml files.
> 
> TEST=Build and CQ
> 
> Change-Id: I6548bac320fe18f5d7ca5f795280399c04daee33

TBR=phosek@google.com,anmittal@google.com,jeffbrown@google.com,abarth@google.com,raggi@google.com,shayba@google.com,leolung@google.com

Change-Id: I28fb0847ca14e3c5771935bd06ab463db059293d
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