root: remove unnecessary patches (#50022)

* root: 6.34 included this patch

* ROOT: no need to patch unless +root7 +geom +webgui

var/spack/repos/builtin/packages/root/package.py

@@ -179,7 +179,7 @@ class Root(CMakePackage):
         patch(
             "https://github.com/root-project/root/pull/15925.diff?full_index=1",
             sha256="1937290a4d54cd2e3e8a8d23d93b8dedaca9ed8dcfdcfa2f0d16629ff53fb3b7",
-            when="@6.28: +python",
+            when="@6.28:6.32 +python",
         )
 
     # ###################### Variants ##########################
@@ -505,6 +505,7 @@ class Root(CMakePackage):
     # See https://github.com/root-project/root/issues/11135
     conflicts("+ipo", msg="LTO is not a supported configuration for building ROOT")
 
+    @when("+root7 +geom +webgui")
     def patch(self):
         filter_file(
             r"#include <sstream>",