[automerge] Remove NetworkCapabilities#combine* tests 2p: 650156df80

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/19784419

Bug: 244271253
Bug: 218802331
Change-Id: Ia81da0ceda2bfae29e0aa3f5cba5dc3ede201f4d
Merged-In: Ia69c20afa16c2153839891f6e33331caa9da33ff
Merged-In: I58462f6d0303803ffd43333b67865c57edef39a3
Merged-In: Id5cca1972e115aeeb1061594dda07e39147630ac