diff --git a/Library/Homebrew/diagnostic.rb b/Library/Homebrew/diagnostic.rb
index 7931a86d9e..27176242f8 100644
--- a/Library/Homebrew/diagnostic.rb
+++ b/Library/Homebrew/diagnostic.rb
@@ -474,28 +474,6 @@ module Homebrew
         EOS
       end
 
-      def check_ld_vars
-        ld_vars = ENV.keys.grep(/^(|DY)LD_/)
-        return if ld_vars.empty?
-
-        values = ld_vars.map { |var| "#{var}: #{ENV.fetch(var)}" }
-        message = inject_file_list values, <<~EOS
-          Setting DYLD_* or LD_* variables can break dynamic linking.
-          Set variables:
-        EOS
-
-        if ld_vars.include? "DYLD_INSERT_LIBRARIES"
-          message += <<~EOS
-
-            Setting DYLD_INSERT_LIBRARIES can cause Go builds to fail.
-            Having this set is common if you use this software:
-              #{Formatter.url("https://asepsis.binaryage.com/")}
-          EOS
-        end
-
-        message
-      end
-
       def check_for_symlinked_cellar
         return unless HOMEBREW_CELLAR.exist?
         return unless HOMEBREW_CELLAR.symlink?
diff --git a/Library/Homebrew/test/diagnostic_checks_spec.rb b/Library/Homebrew/test/diagnostic_checks_spec.rb
index 95f22b1d2a..5fd14791c4 100644
--- a/Library/Homebrew/test/diagnostic_checks_spec.rb
+++ b/Library/Homebrew/test/diagnostic_checks_spec.rb
@@ -113,26 +113,6 @@ describe Homebrew::Diagnostic::Checks do
     HOMEBREW_CELLAR.mkpath
   end
 
-  specify "#check_ld_vars catches LD vars" do
-    ENV["LD_LIBRARY_PATH"] = "foo"
-    expect(subject.check_ld_vars).to match("Setting DYLD_\\* or LD_\\* variables")
-  end
-
-  specify "#check_ld_vars catches DYLD vars" do
-    ENV["DYLD_LIBRARY_PATH"] = "foo"
-    expect(subject.check_ld_vars).to match("Setting DYLD_\\* or LD_\\* variables")
-  end
-
-  specify "#check_ld_vars catches LD and DYLD vars" do
-    ENV["LD_LIBRARY_PATH"] = "foo"
-    ENV["DYLD_LIBRARY_PATH"] = "foo"
-    expect(subject.check_ld_vars).to match("Setting DYLD_\\* or LD_\\* variables")
-  end
-
-  specify "#check_ld_vars returns success when neither LD nor DYLD vars are set" do
-    expect(subject.check_ld_vars).to be nil
-  end
-
   specify "#check_tmpdir" do
     ENV["TMPDIR"] = "/i/don/t/exis/t"
     expect(subject.check_tmpdir).to match("doesn't exist")
diff --git a/Library/Homebrew/test/os/mac/diagnostic_spec.rb b/Library/Homebrew/test/os/mac/diagnostic_spec.rb
index 353a4e7b68..aa44899d50 100644
--- a/Library/Homebrew/test/os/mac/diagnostic_spec.rb
+++ b/Library/Homebrew/test/os/mac/diagnostic_spec.rb
@@ -28,9 +28,4 @@ describe Homebrew::Diagnostic::Checks do
     expect(subject.check_ruby_version)
       .to match "Ruby version 1.8.6 is unsupported on 10.12"
   end
-
-  specify "#check_dyld_insert" do
-    ENV["DYLD_INSERT_LIBRARIES"] = "foo"
-    expect(subject.check_ld_vars).to match("Setting DYLD_INSERT_LIBRARIES")
-  end
 end