Remove stale aidl-export references

As per the TODO, the aidl-export directory was moved to
packages/modules/Connectivity/framework.

Bug: 222234190
Test: TH
Merged-In: I399d2bb259d50916c575e59621ddfaf798affc5c
Change-Id: I5d77a9b0acf8e47c3bed144c735440b5593d7ae1
1 file changed