Simplify podspec

Author: kraenhansen

packages/host/react-native-node-api.podspec

@@ -41,26 +41,11 @@ Pod::Spec.new do |s|
     CMD
   }
 
-  # Use install_modules_dependencies helper to install the dependencies if React Native version >=0.71.0.
+  # Use install_modules_dependencies helper to install the dependencies (requires React Native version >=0.71.0).
   # See https://github.com/facebook/react-native/blob/febf6b7f33fdb4904669f99d795eba4c0f95d7bf/scripts/cocoapods/new_architecture.rb#L79.
   if respond_to?(:install_modules_dependencies, true)
     install_modules_dependencies(s)
   else
-    s.dependency "React-Core"
-    # Don't install the dependencies when we run `pod install` in the old architecture.
-    if ENV['RCT_NEW_ARCH_ENABLED'] == '1' then
-      # TODO: Re-visit these dependencies and flags and remove them if not needed.
-      s.compiler_flags = folly_compiler_flags + " -DRCT_NEW_ARCH_ENABLED=1"
-      s.pod_target_xcconfig    = {
-          "HEADER_SEARCH_PATHS" => "\"$(PODS_ROOT)/boost\"",
-          "OTHER_CPLUSPLUSFLAGS" => "-DFOLLY_NO_CONFIG -DFOLLY_MOBILE=1 -DFOLLY_USE_LIBCPP=1",
-          "CLANG_CXX_LANGUAGE_STANDARD" => "c++17"
-      }
-      s.dependency "React-Codegen"
-      s.dependency "RCT-Folly"
-      s.dependency "RCTRequired"
-      s.dependency "RCTTypeSafety"
-      s.dependency "ReactCommon/turbomodule/core"
-    end
+    raise "This version of React Native is too old for React Native Node-API."
   end
 end