Update installer.ts

Author: Maxim Lobanov

src/installer.ts

@@ -13,10 +13,7 @@ export class CocoapodsInstaller {
             return;
         }
 
-        const uninstallExitCode = await exec.exec("gem", ["uninstall", "cocoapods", "--all", "--executables"]).catch(error => error);
-        if (uninstallExitCode !== 0) {
-            core.info("Error during deleting existing version of cocoapods");
-        }
+        await exec.exec("gem", ["uninstll", "cocoapods", "--all", "--executables"]);
 
         const installExitCode = await exec.exec("gem", ["install", "cocoapods", "-v", versionSpec]);
         if (installExitCode !== 0) {