[Build] remove legacy version check for plugin builds

Removes the SEMVAR check for external plugins. 7.9 is not relevant
to the application.

The semvar library was also preventing major.minor.patch.x which is the
format from OpenSearch plugins.

Related issue:
opensearch-project#992

Signed-off-by: Kawika Avilla <kavilla414@gmail.com>

packages/osd-plugin-helpers/src/tasks/write_server_files.ts

@@ -33,7 +33,6 @@
 import { pipeline } from 'stream';
 import { promisify } from 'util';
 
-import semver from 'semver';
 import vfs from 'vinyl-fs';
 import { transformFileWithBabel, transformFileStream } from '@osd/dev-utils';
 
@@ -51,17 +50,12 @@ export async function writeServerFiles({
 }: BuildContext) {
   log.info('copying server source into the build and converting with babel');
 
-  const OPENSEARCH_DASHBOARDS_VERSION_79 = semver.satisfies(opensearchDashboardsVersion, '~7.9.0');
-
   // copy source files and apply some babel transformations in the process
   await asyncPipeline(
     vfs.src(
       [
         'opensearch_dashboards.json',
-        // always copy over the package.json file if we're building for 7.9
-        ...(OPENSEARCH_DASHBOARDS_VERSION_79 ? ['package.json'] : []),
-        // always copy over server files if we're building for 7.9, otherwise rely on `server: true` in opensearch_dashboards.json manifest
-        ...(OPENSEARCH_DASHBOARDS_VERSION_79 || plugin.manifest.server
+        ...(plugin.manifest.server
           ? config.serverSourcePatterns || [
               'yarn.lock',
               'tsconfig.json',
@@ -86,7 +80,7 @@ export async function writeServerFiles({
     ),
 
     // add opensearchDashboardsVersion to opensearch_dashboards.json files and opensearchDashboards.version to package.json files
-    // we don't check for `opensearchDashboards.version` in 7.10+ but the plugin helpers can still be used
+    // we don't check for `opensearchDashboards.version` in 1.0+ but the plugin helpers can still be used
     // to build plugins for older OpenSearch Dashboards versions so we do our best to support those needs by
     // setting the property if the package.json file is encountered
     transformFileStream((file) => {