Revert "Bug 1992418 - add runtime.getVersion() r=robwu" for causing mochitests failures at apis.html

This reverts commit df22bd7905.

toolkit/components/extensions/child/ext-runtime.js

@@ -126,10 +126,6 @@ this.runtime = class extends ExtensionAPI {
           return context.lastError;
         },
 
-        getVersion() {
-          return extension.manifest.version;
-        },
-
         getManifest() {
           return Cu.cloneInto(extension.manifest, context.cloneScope);
         },

toolkit/components/extensions/schemas/runtime.json

@@ -382,17 +382,6 @@
           "description": "The manifest details."
         }
       },
-      {
-        "name": "getVersion",
-        "allowedContexts": ["content", "devtools"],
-        "description": "Returns the extension version as declared in the manifest.",
-        "type": "function",
-        "parameters": [],
-        "returns": {
-          "type": "string",
-          "description": "The extension version."
-        }
-      },
       {
         "name": "getURL",
         "type": "function",

toolkit/components/extensions/test/xpcshell/test_ext_runtime_getVersion.js

@@ -1,47 +0,0 @@
-"use strict";
-
-const server = createHttpServer({ hosts: ["example.com"] });
-server.registerDirectory("/data/", do_get_file("data"));
-
-add_task(async function test_runtime_getVersion() {
-  const version = "1.2.3";
-
-  const extension = ExtensionTestUtils.loadExtension({
-    manifest: {
-      version: version,
-      content_scripts: [
-        {
-          matches: ["http://example.com/data/file_sample.html"],
-          js: ["content_script.js"],
-        },
-      ],
-    },
-
-    background() {
-      browser.test.assertEq(
-        browser.runtime.getVersion(),
-        version,
-        "runtime.getVersion() from background script is correct"
-      );
-    },
-
-    files: {
-      "content_script.js"() {
-        browser.test.assertEq(
-          browser.runtime.getVersion(),
-          version,
-          "runtime.getVersion() from content script is correct"
-        );
-      },
-    },
-  });
-
-  await extension.startup();
-
-  const contentPage = await ExtensionTestUtils.loadContentPage(
-    "http://example.com/data/file_sample.html"
-  );
-
-  await contentPage.close();
-  await extension.unload();
-});

toolkit/components/extensions/test/xpcshell/xpcshell-common.toml

@@ -610,8 +610,6 @@ skip-if = [
 
 ["test_ext_runtime_getPlatformInfo.js"]
 
-["test_ext_runtime_getVersion.js"]
-
 ["test_ext_runtime_id.js"]
 
 ["test_ext_runtime_messaging_self.js"]