mpfr@2: remove

Aliases/mpfr@4

@@ -1 +0,0 @@
-../Formula/mpfr.rb

Formula/mpfr@2.rb

@@ -1,72 +0,0 @@
-class MpfrAT2 < Formula
-  desc "Multiple-precision floating-point computations C lib"
-  homepage "http://www.mpfr.org/"
-  # Track gcc infrastructure releases.
-  url "https://gcc.gnu.org/pub/gcc/infrastructure/mpfr-2.4.2.tar.bz2"
-  mirror "http://www.mpfr.org/mpfr-2.4.2/mpfr-2.4.2.tar.bz2"
-  sha256 "c7e75a08a8d49d2082e4caee1591a05d11b9d5627514e678f02d66a124bcf2ba"
-
-  bottle do
-    cellar :any
-    rebuild 1
-    sha256 "4736818793c64345323ceeb5f7ab66a52d84c3123ba476b08b790ef9abc12e3d" => :high_sierra
-    sha256 "338b557f978df323497c4b56ce90fb623817e51d312c474220029a9ddd42ccc9" => :sierra
-    sha256 "999668c3a0a71ed8c4f4a7b50a5c2b242ba488b565702e5fcea42a113a553210" => :el_capitan
-    sha256 "f923e8b5a61e736aac64b98c54881e6d336c286b456c78932681c3238c5b3751" => :yosemite
-  end
-
-  keg_only :versioned_formula
-
-  depends_on "gmp@4"
-
-  fails_with :clang do
-    build 421
-    cause <<~EOS
-      clang build 421 segfaults while building in superenv;
-      see https://github.com/mxcl/homebrew/issues/15061
-      EOS
-  end
-
-  def install
-    args = %W[
-      --disable-dependency-tracking
-      --prefix=#{prefix}
-      --with-gmp=#{Formula["gmp@4"].opt_prefix}
-    ]
-
-    # Build 32-bit where appropriate, and help configure find 64-bit CPUs
-    # Note: This logic should match what the GMP formula does.
-    if MacOS.prefer_64_bit?
-      ENV.m64
-      args << "--build=x86_64-apple-darwin"
-    else
-      ENV.m32
-      args << "--build=none-apple-darwin"
-    end
-
-    system "./configure", *args
-    system "make"
-    system "make", "check"
-    system "make", "install"
-  end
-
-  test do
-    (testpath/"test.c").write <<~EOS
-      #include <gmp.h>
-      #include <mpfr.h>
-
-      int main()
-      {
-        mpfr_t x;
-        mpfr_init(x);
-        mpfr_clear(x);
-        return 0;
-      }
-    EOS
-    gmp = Formula["gmp@4"]
-    system ENV.cc, "test.c", "-o", "test",
-                   "-lgmp", "-I#{gmp.include}", "-L#{gmp.lib}",
-                   "-lmpfr", "-I#{include}", "-L#{lib}"
-    system "./test"
-  end
-end