podspec consistency

FirebaseAuth.podspec

@@ -63,6 +63,5 @@ supports email and password accounts, as well as several 3rd party authenticatio
   s.framework = 'Security'
   s.dependency 'FirebaseCore', '~> 5.0'
   s.dependency 'GoogleUtilities/Environment', '~> 5.0'
-  s.dependency 'GoogleUtilities/Logger', '~> 5.0'
   s.dependency 'GTMSessionFetcher/Core', '~> 1.1'
 end

FirebaseCore.podspec

@@ -27,7 +27,7 @@ Firebase Core includes FIRApp and FIROptions which provide central configuration
   s.prefix_header_file = false
 
   s.source_files = 'Firebase/Core/**/*.[mh]'
-  s.public_header_files = 'Firebase/Core/Public/*.h'
+  s.public_header_files = 'Firebase/Core/Public/*.h', 'Firebase/Core/Private/*.h'
   s.private_header_files = 'Firebase/Core/Private/*.h'
   s.frameworks = [
     'Foundation'

FirebaseFirestore.podspec

@@ -48,7 +48,6 @@ Google Cloud Firestore is a NoSQL document database built for automatic scaling,
   s.public_header_files = 'Firestore/Source/Public/*.h'
 
   s.dependency 'FirebaseCore', '~> 5.0'
-  s.dependency 'GoogleUtilities/Logger', '~> 5.0'
   s.dependency 'gRPC-ProtoRPC', '~> 1.0'
   s.dependency 'leveldb-library', '~> 1.18'
   s.dependency 'Protobuf', '~> 3.1'