diff --git a/Formula/mongodb@3.4.rb b/Formula/mongodb@3.4.rb
deleted file mode 100644
index 20e33cc309..0000000000
--- a/Formula/mongodb@3.4.rb
+++ /dev/null
@@ -1,128 +0,0 @@
-class MongodbAT34 < Formula
-  desc "High-performance, schema-free, document-oriented database"
-  homepage "https://www.mongodb.org/"
-  # do not upgrade to versions >3.4.18 as they are under the SSPL which is not
-  # an open-source license.
-  url "https://fastdl.mongodb.org/src/mongodb-src-r3.4.18.tar.gz"
-  sha256 "a1c17e9977307752ddac4b06bcb65be177035057c21955df5a65e2db74a20856"
-
-  bottle do
-    cellar :any
-    rebuild 1
-    sha256 "fb3ce36a4fa8767b53d49914000a0985934d7091a63e9e630fada9704fa861cd" => :mojave
-    sha256 "5914b8f9b37c4c7b66c533f6a5fb3e643a775e6c6eb839a6b2993b5bf51665a6" => :high_sierra
-    sha256 "023c524acb02fa97d24b0312310ae8dcc3cd15bba7252d2a599cf1221182e406" => :sierra
-  end
-
-  keg_only :versioned_formula
-
-  depends_on "go" => :build
-  depends_on "pkg-config" => :build
-  depends_on "scons" => :build
-
-  depends_on "openssl"
-
-  def install
-    (buildpath/".brew_home/Library/Python/2.7/lib/python/site-packages/vendor.pth").write <<~EOS
-      import site; site.addsitedir("#{buildpath}/vendor/lib/python2.7/site-packages")
-    EOS
-
-    # New Go tools have their own build script but the server scons "install"
-    # target is still responsible for installing them.
-
-    cd "src/mongo/gotools" do
-      inreplace "build.sh" do |s|
-        s.gsub! "$(git describe)", version.to_s
-        s.gsub! "$(git rev-parse HEAD)", "homebrew"
-      end
-
-      ENV["LIBRARY_PATH"] = Formula["openssl"].opt_lib
-      ENV["CPATH"] = Formula["openssl"].opt_include
-
-      system "./build.sh", "ssl"
-    end
-
-    (buildpath/"src/mongo-tools").install Dir["src/mongo/gotools/bin/*"]
-
-    args = %W[
-      -j#{ENV.make_jobs}
-      --build-mongoreplay=true
-      --osx-version-min=#{MacOS.version}
-      --prefix=#{prefix}
-      --ssl
-      --use-new-tools
-      CC=#{ENV.cc}
-      CXX=#{ENV.cxx}
-      CCFLAGS=-I#{Formula["openssl"].opt_include}
-      LINKFLAGS=-L#{Formula["openssl"].opt_lib}
-    ]
-
-    args << "--disable-warnings-as-errors" if MacOS.version >= :yosemite
-
-    system "scons", "install", *args
-
-    (buildpath/"mongod.conf").write mongodb_conf
-    etc.install "mongod.conf"
-  end
-
-  def post_install
-    (var/"mongodb").mkpath
-    (var/"log/mongodb").mkpath
-  end
-
-  def mongodb_conf; <<~EOS
-    systemLog:
-      destination: file
-      path: #{var}/log/mongodb/mongo.log
-      logAppend: true
-    storage:
-      dbPath: #{var}/mongodb
-    net:
-      bindIp: 127.0.0.1
-  EOS
-  end
-
-  plist_options :manual => "#{HOMEBREW_PREFIX}/opt/mongodb@3.4/bin/mongod --config #{HOMEBREW_PREFIX}/etc/mongod.conf"
-
-  def plist; <<~EOS
-    <?xml version="1.0" encoding="UTF-8"?>
-    <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-    <plist version="1.0">
-    <dict>
-      <key>Label</key>
-      <string>#{plist_name}</string>
-      <key>ProgramArguments</key>
-      <array>
-        <string>#{opt_bin}/mongod</string>
-        <string>--config</string>
-        <string>#{etc}/mongod.conf</string>
-      </array>
-      <key>RunAtLoad</key>
-      <true/>
-      <key>KeepAlive</key>
-      <false/>
-      <key>WorkingDirectory</key>
-      <string>#{HOMEBREW_PREFIX}</string>
-      <key>StandardErrorPath</key>
-      <string>#{var}/log/mongodb/output.log</string>
-      <key>StandardOutPath</key>
-      <string>#{var}/log/mongodb/output.log</string>
-      <key>HardResourceLimits</key>
-      <dict>
-        <key>NumberOfFiles</key>
-        <integer>4096</integer>
-      </dict>
-      <key>SoftResourceLimits</key>
-      <dict>
-        <key>NumberOfFiles</key>
-        <integer>4096</integer>
-      </dict>
-    </dict>
-    </plist>
-  EOS
-  end
-
-  test do
-    system "#{bin}/mongod", "--sysinfo"
-  end
-end