fixes for deactivating hardhat

apps/remix-ide/src/app/files/remixd-handle.js

@@ -53,7 +53,6 @@ export class RemixdHandle extends WebsocketPlugin {
   async canceled () {
     // await this.appManager.deactivatePlugin('git') // plugin call doesn't work.. see issue https://github.com/ethereum/remix-plugin/issues/342
     await this.appManager.deactivatePlugin('remixd')
-    await this.appManager.deactivatePlugin('hardhat')
   }
 
   /**

apps/remix-ide/src/remixAppManager.js

@@ -53,6 +53,8 @@ export class RemixAppManager extends PluginManager {
   }
 
   async deactivatePlugin (name) {
+    const isActive = await this.isActive(name)
+    if (!isActive) return
     const [to, from] = [
       await this.getProfile(name),
       await this.getProfile(this.requestFrom)