refactor: remove unneeded codecov copy and unlink

src/index.ts

@@ -1,51 +1,17 @@
 const core = require('@actions/core');
 const exec = require('@actions/exec');
 
-const fs = require('fs');
-
 import buildExec from './buildExec';
 
-const codecovScript = fs.readFileSync(__dirname + '/codecov');
+const {execArgs, options, failCi} = buildExec();
 
-let failCi;
-try {
-  const {execArgs, options, filepath, failCi} = buildExec();
-
-  fs.writeFile(filepath, codecovScript, (err) => {
-    if (err && failCi) {
-      throw err;
-    } else if (err) {
-      core.warning(`Codecov warning: ${err.message}`);
-    }
-
-    exec.exec('bash', execArgs, options)
-        .catch((err) => {
-          if (failCi) {
-            core.setFailed(
-                `Codecov failed with the following error: ${err.message}`,
-            );
-          } else {
-            core.warning(`Codecov warning: ${err.message}`);
-          }
-        })
-        .then(() => {
-          unlinkFile();
-        });
-
-    const unlinkFile = () => {
-      fs.unlink(filepath, (err) => {
-        if (err && failCi) {
-          throw err;
-        } else if (err) {
-          core.warning(`Codecov warning: ${err.message}`);
-        }
-      });
-    };
-  });
-} catch (error) {
-  if (failCi) {
-    core.setFailed(`Codecov failed with the following error: ${error.message}`);
-  } else {
-    core.warning(`Codecov warning: ${error.message}`);
-  }
-}
+exec.exec('bash', execArgs, options)
+    .catch((err) => {
+      if (failCi) {
+        core.setFailed(
+            `Codecov failed with the following error: ${err.message}`,
+        );
+      } else {
+        core.warning(`Codecov warning: ${err.message}`);
+      }
+    });