Revert "file-systems: %base-file-systems: Add tmpfs /run."

This reverts commit e88018be70.  Since this
change breaks current dbus-service-type, it would be better to wait
https://issues.guix.gnu.org/73494 finished.

gnu/system/file-systems.scm

@@ -82,7 +82,6 @@
             %pseudo-terminal-file-system
             %tty-gid
             %immutable-store
-            %runtime-variable-data
             %control-groups
             %elogind-file-systems
 
@@ -449,17 +448,6 @@ TARGET in the other system."
     (check? #f)
     (flags '(read-only bind-mount no-atime))))
 
-(define %runtime-variable-data
-  (file-system
-    (type "tmpfs")
-    (mount-point "/run")
-    (device "tmpfs")
-    (flags '(no-suid no-dev strict-atime))
-    (options "mode=0755,nr_inodes=800k,size=20%")
-    (needed-for-boot? #t)
-    (check? #f)
-    (create-mount-point? #t)))
-
 (define %control-groups
   ;; The cgroup2 file system.
   (list (file-system
@@ -509,8 +497,7 @@ TARGET in the other system."
         %debug-file-system
         %shared-memory-file-system
         %efivars-file-system
-        %immutable-store
-        %runtime-variable-data))
+        %immutable-store))
 
 (define %base-live-file-systems
   ;; This is the bare minimum to use live file-systems.