freetds@0.91: delete

Closes #43562.

Signed-off-by: FX Coudert <fxcoudert@gmail.com>

Aliases/freetds@1.1

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

Formula/freetds@0.91.rb

@@ -1,39 +0,0 @@
-class FreetdsAT091 < Formula
-  desc "Libraries to talk to Microsoft SQL Server & Sybase"
-  homepage "https://www.freetds.org/"
-  url "https://www.freetds.org/files/stable/freetds-0.91.112.tar.gz"
-  sha256 "be4f04ee57328c32e7e7cd7e2e1483e535071cec6101e46b9dd15b857c5078ed"
-  revision 1
-
-  bottle do
-    sha256 "2e7675f7e1747c23583ff1d005f2d37f64159609d48993577813502f68010671" => :mojave
-    sha256 "d5c53abae01fa996e458c240358f75aa5f34ec628637d9e20ae654c81a45f285" => :high_sierra
-    sha256 "1458764cb5cb70d4b514502d3c94c0827dbba251cd03ff76960601e63f52faa1" => :sierra
-  end
-
-  keg_only :versioned_formula
-
-  depends_on "pkg-config" => :build
-  depends_on "openssl"
-  depends_on "unixodbc"
-
-  def install
-    args = %W[
-      --prefix=#{prefix}
-      --mandir=#{man}
-      --enable-krb5
-      --with-openssl=#{Formula["openssl"].opt_prefix}
-      --with-tdsver=7.1
-      --with-unixodbc=#{Formula["unixodbc"].opt_prefix}
-    ]
-
-    system "./configure", *args
-    system "make"
-    ENV.deparallelize # Or fails to install on multi-core machines
-    system "make", "install"
-  end
-
-  test do
-    system "#{bin}/tsql", "-C"
-  end
-end