diff --git a/Formula/solr@5.5.rb b/Formula/solr@5.5.rb
deleted file mode 100644
index 003e8388ac..0000000000
--- a/Formula/solr@5.5.rb
+++ /dev/null
@@ -1,65 +0,0 @@
-class SolrAT55 < Formula
-  desc "Enterprise search platform from the Apache Lucene project"
-  homepage "https://lucene.apache.org/solr/"
-  url "https://www.apache.org/dyn/closer.cgi?path=lucene/solr/5.5.5/solr-5.5.5.tgz"
-  mirror "https://archive.apache.org/dist/lucene/solr/5.5.5/solr-5.5.5.tgz"
-  sha256 "2bbe3a55976f118c5d8c2382d4591257f6e2af779c08c6561e44afa3181a87c1"
-
-  bottle :unneeded
-
-  keg_only :versioned_formula
-
-  depends_on :java
-
-  skip_clean "example/logs"
-
-  def install
-    bin.install %w[bin/solr bin/post bin/oom_solr.sh]
-    pkgshare.install "bin/solr.in.sh"
-    prefix.install %w[example server]
-    libexec.install Dir["*"]
-
-    # Fix the classpath for the post tool
-    inreplace "#{bin}/post", '"$SOLR_TIP/dist"', "#{libexec}/dist"
-
-    # Fix the paths in the sample solrconfig.xml files
-    Dir.glob([
-               "#{prefix}/example/**/solrconfig.xml",
-               "#{prefix}/**/data_driven_schema_configs/**/solrconfig.xml",
-               "#{prefix}/**/sample_techproducts_configs/**/solrconfig.xml",
-             ]) do |f|
-      inreplace f, ":../../../..}/", "}/libexec/"
-    end
-  end
-
-  plist_options :manual => "#{HOMEBREW_PREFIX}/opt/solr@5.5/bin/solr start"
-
-  def plist
-    <<~EOS
-      <?xml version="1.0" encoding="UTF-8"?>
-      <!DOCTYPE plist PUBLIC "-//Apple Computer//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}/solr</string>
-            <string>start</string>
-            <string>-f</string>
-          </array>
-          <key>ServiceDescription</key>
-          <string>#{name}</string>
-          <key>WorkingDirectory</key>
-          <string>#{HOMEBREW_PREFIX}</string>
-          <key>RunAtLoad</key>
-          <true/>
-      </dict>
-      </plist>
-    EOS
-  end
-
-  test do
-    system bin/"solr"
-  end
-end
diff --git a/Formula/solr@6.6.rb b/Formula/solr@6.6.rb
deleted file mode 100644
index a01da499a4..0000000000
--- a/Formula/solr@6.6.rb
+++ /dev/null
@@ -1,65 +0,0 @@
-class SolrAT66 < Formula
-  desc "Enterprise search platform from the Apache Lucene project"
-  homepage "https://lucene.apache.org/solr/"
-  url "https://www.apache.org/dyn/closer.cgi?path=lucene/solr/6.6.5/solr-6.6.5.tgz"
-  mirror "https://archive.apache.org/dist/lucene/solr/6.6.5/solr-6.6.5.tgz"
-  sha256 "fa65e922bc32d36ef65bee866095da563aa5ddd7e953798c06b6494572d51729"
-
-  bottle :unneeded
-
-  keg_only :versioned_formula
-
-  depends_on :java
-
-  skip_clean "example/logs"
-
-  def install
-    bin.install %w[bin/solr bin/post bin/oom_solr.sh]
-    pkgshare.install "bin/solr.in.sh"
-    prefix.install %w[example server]
-    libexec.install Dir["*"]
-
-    # Fix the classpath for the post tool
-    inreplace "#{bin}/post", '"$SOLR_TIP/dist"', "#{libexec}/dist"
-
-    # Fix the paths in the sample solrconfig.xml files
-    Dir.glob([
-               "#{prefix}/example/**/solrconfig.xml",
-               "#{prefix}/**/data_driven_schema_configs/**/solrconfig.xml",
-               "#{prefix}/**/sample_techproducts_configs/**/solrconfig.xml",
-             ]) do |f|
-      inreplace f, ":../../../..}/", "}/libexec/"
-    end
-  end
-
-  plist_options :manual => "#{HOMEBREW_PREFIX}/opt/solr@6.6/bin/solr start"
-
-  def plist
-    <<~EOS
-      <?xml version="1.0" encoding="UTF-8"?>
-      <!DOCTYPE plist PUBLIC "-//Apple Computer//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}/solr</string>
-            <string>start</string>
-            <string>-f</string>
-          </array>
-          <key>ServiceDescription</key>
-          <string>#{name}</string>
-          <key>WorkingDirectory</key>
-          <string>#{HOMEBREW_PREFIX}</string>
-          <key>RunAtLoad</key>
-          <true/>
-      </dict>
-      </plist>
-    EOS
-  end
-
-  test do
-    system bin/"solr"
-  end
-end