dev-haskell/servant-server: remove unused patch(es)

Signed-off-by: Michael Mair-Keimberger <mm1ke@gentoo.org>

dev-haskell/servant-server/files/servant-server-0.18.3-add-examples-flag.patch

@@ -1,31 +0,0 @@
-From: hololeap <hololeap@protonmail.com>
-Signed-off-by: hololeap <hololeap@protonmail.com>
-
-Add 'examples' USE flag and rename the example executable from 'greet' to
-'servant-server-example'.
-
-diff -urN servant-server-0.18.3/servant-server.cabal servant-server-0.18.3-r1/servant-server.cabal
---- servant-server-0.18.3/servant-server.cabal	2022-02-11 02:33:28.463223367 -0700
-+++ servant-server-0.18.3-r1/servant-server.cabal	2022-02-11 02:35:38.242984376 -0700
-@@ -33,6 +33,10 @@
-   type: git
-   location: http://github.com/haskell-servant/servant.git
- 
-+flag examples
-+  description: Build the servant-server-example executable
-+  default: False
-+
- library
-   exposed-modules:
-     Servant
-@@ -99,7 +103,9 @@
- 
-   ghc-options: -Wall -Wno-redundant-constraints
- 
--executable greet
-+executable servant-server-example
-+  if !flag(examples)
-+    buildable: False
-   main-is: greet.hs
-   hs-source-dirs: example
-   ghc-options: -Wall