gnu: Remove htslib-for-samtools-1.2.

* gnu/packages/bioinformatics.scm (htslib-for-samtools-1.2):
Delete variable.

Change-Id: I62c8525d27321acd7fea32e25623e5cbd7e74c33

gnu/packages/bioinformatics.scm

@@ -9750,29 +9750,6 @@ data.  It also provides the @command{bgzip}, @command{htsfile}, and
                (base32
                 "1rja282fwdc25ql6izkhdyh8ppw8x2fs0w0js78zgkmqjlikmma9"))))))
 
-(define htslib-for-samtools-1.2
-  (package/inherit htslib
-    (version "1.2.1")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append
-                    "https://github.com/samtools/htslib/releases/download/"
-                    version "/htslib-" version ".tar.bz2"))
-              (sha256
-               (base32
-                "1c32ssscbnjwfw3dra140fq7riarp2x990qxybh34nr1p5r17nxx"))))
-    (arguments
-     `(#:phases
-       (modify-phases %standard-phases
-         (add-after 'unpack 'patch-tests
-           (lambda _
-             (substitute* "test/test.pl"
-               (("/bin/bash") (which "bash"))))))))
-    (inputs
-     `(("zlib" ,zlib)))
-    (native-inputs
-     `(("perl" ,perl)))))
-
 (define htslib-for-stringtie
   (package
     (inherit htslib-1.12)