libio-pty-perl: remove unsed patch

Though upgrade to 1.20 says this file was removed, it wasn´t done.
Remove it now.

Signed-off-by: Maxin John <maxin.john@gmail.com>

meta-oe/recipes-devtools/perl/libio-pty-perl/0001-Make-function-checks-more-robust-within-shared-libs.patch

@@ -1,54 +0,0 @@
-From 1735a78561dbe139fd138caef2d44d81f5494fe7 Mon Sep 17 00:00:00 2001
-From: Khem Raj <raj.khem@gmail.com>
-Date: Tue, 4 Apr 2023 12:28:11 -0700
-Subject: [PATCH] Make function checks more robust within shared libs
-
-Previous attempt to error at link like was with
-
-https://github.com/toddr/IO-Tty/commit/1747cdf9f98cfd3aada9bf6c09f9d46297e18a5e
-
-this however causes issues with newer clang where it detects
-the assignment as -Wint-conversion warning which is treated at error
-and builds with clang fail. So this is an attempt to instruct
-linker explicitly to error out if the symbol is not found during link
-time when building a shared library, this fixes both the problems
-as reported in
-
-https://github.com/toddr/IO-Tty/issues/23
-
-as well as
-
-https://github.com/toddr/IO-Tty/pull/33#issuecomment-1260147256
-
-Upstream-Status: Submitted [https://github.com/toddr/IO-Tty/pull/33]
-Signed-off-by: Khem Raj <raj.khem@gmail.com>
----
- Makefile.PL | 5 +++--
- 1 file changed, 3 insertions(+), 2 deletions(-)
-
-diff --git a/Makefile.PL b/Makefile.PL
-index eaf47e0..2e8338d 100644
---- a/Makefile.PL
-+++ b/Makefile.PL
-@@ -163,7 +163,8 @@ main ()
- #if defined (__stub_$f) || defined (__stub___$f)
- choke me
- #else
--f = $f ();
-+f = $f;
-+f();
- #endif
- 
-   ;
-@@ -173,7 +174,7 @@ ESQ
- 
-   close(TST);
-   print "Looking for $f()" . "." x (13-length($f)) . " ";
--  if (system("$cfg{'cc'} $flags $funcs{$f} functest_$f.c > functest_$f.log 2>&1")) {
-+  if (system("$cfg{'cc'} $flags -Wl,--no-undefined $funcs{$f} functest_$f.c > functest_$f.log 2>&1")) {
-     print "not found.\n";
-   } else {
-     $define{"-DHAVE_\U$f"} = undef;
--- 
-2.40.0
-