gnu: ganeti: Remove PYTHONPATH-altering patch.

* gnu/packages/patches/ganeti-preserve-PYTHONPATH.patch: Delete file.
* gnu/local.mk (dist_patch_DATA): Un-register it.
* gnu/packages/virtualization.scm (ganeti): Remove patch.

gnu/local.mk

@@ -1008,7 +1008,6 @@ dist_patch_DATA =						\
   %D%/packages/patches/ganeti-drbd-compat.patch			\
   %D%/packages/patches/ganeti-haskell-pythondir.patch		\
   %D%/packages/patches/ganeti-os-disk-size.patch		\
-  %D%/packages/patches/ganeti-preserve-PYTHONPATH.patch		\
   %D%/packages/patches/ganeti-shepherd-master-failover.patch	\
   %D%/packages/patches/ganeti-shepherd-support.patch		\
   %D%/packages/patches/gash-utils-ls-test.patch			\

gnu/packages/patches/ganeti-preserve-PYTHONPATH.patch

@@ -1,21 +0,0 @@
-Do not override PYTHONPATH when calling Python code from the Haskell
-daemons.  This is necessary because the Python library dependencies are
-only available through PYTHONPATH.
-
-diff --git a/src/Ganeti/Query/Exec.hs b/src/Ganeti/Query/Exec.hs
---- a/src/Ganeti/Query/Exec.hs
-+++ b/src/Ganeti/Query/Exec.hs
-@@ -99,12 +99,10 @@ spawnJobProcess jid = withErrorLogAt CRITICAL (show jid) $
-   do
-     use_debug <- isDebugMode
-     env_ <- (M.toList . M.insert "GNT_DEBUG" (if use_debug then "1" else "0")
--            . M.insert "PYTHONPATH" AC.pythondir
-             . M.fromList)
-            `liftM` getEnvironment
-     execPy <- P.jqueueExecutorPy
-     logDebug $ "Executing " ++ AC.pythonPath ++ " " ++ execPy
--               ++ " with PYTHONPATH=" ++ AC.pythondir
- 
-     (master, child) <- pipeClient connectConfig
-     let (rh, wh) = clientToHandle child
-

gnu/packages/virtualization.scm

@@ -404,8 +404,7 @@ (define-public ganeti
                                        "ganeti-drbd-compat.patch"
                                        "ganeti-os-disk-size.patch"
                                        "ganeti-haskell-pythondir.patch"
-                                       "ganeti-disable-version-symlinks.patch"
+                                       "ganeti-disable-version-symlinks.patch"))))
-                                       "ganeti-preserve-PYTHONPATH.patch"))))
     (build-system gnu-build-system)
     (arguments
      `(#:imported-modules (,@%gnu-build-system-modules