Remove version flag from pm_tool.gni (flutter#31069)

This flag is deprecated and no longer used.

Author: chaselatta

tools/fuchsia/gn-sdk/pm_tool.gni

@@ -9,8 +9,6 @@ import("config/config.gni")
 # Parameters
 #   package_name - defaults to target_name
 #   archive_manifest - required
-#   version [optional]
-#     The package version. Defaults to 0.
 #   command - the packaging step to perform valid steps are build, archive
 #
 # Forwarded parameters
@@ -45,11 +43,6 @@ template("fuchsia_pm_tool") {
       package_name = invoker.package_name
     }
 
-    version = "0"
-    if (defined(invoker.version)) {
-      version = invoker.version
-    }
-
     # tool path
     _pm_tool_path = "${fuchsia_tool_dir}/pm"
     script = "//build/gn_run_binary.py"
@@ -89,8 +82,6 @@ template("fuchsia_pm_tool") {
       rebase_path(archive_manifest, root_build_dir),
       "-n",
       package_name,
-      "-version",
-      version,
     ]
     if (command == "build") {
       args += [