remove a workaround for Windows

It's fixed in istanbuljs/v8-to-istanbul@c59a21a

index.js

@@ -31,22 +31,6 @@ const isTravisCi = process.env.TRAVIS === 'true';
 const codecovBashPath = process.platform === 'win32' ? join(cwd, 'coverage', uuidV4()) : null;
 
 (async () => {
-	// Remove this workaround when https://github.com/istanbuljs/v8-to-istanbul/pull/16 is merged
-	if (process.platform === 'win32') {
-		try {
-			const patchPath = require.resolve('./patch.txt');
-			const {readFile, unlink, writeFile} = require('fs');
-
-			const originalScriptPath = require.resolve('v8-to-istanbul/lib/script');
-			const originalScript = await promisify(readFile)(originalScriptPath, 'utf8');
-			await promisify(writeFile)(originalScriptPath, originalScript.replace(
-				/_buildLines \(source, lines, shebangLength\) \{[^9]*(?=applyCoverage)/um,
-				await promisify(readFile)(patchPath, 'utf8')
-			));
-			await promisify(unlink)(patchPath);
-		} catch {}
-	}
-
 	if (command === undefined) {
 		require(c8BinPath);
 		return;

package.json

@@ -10,8 +10,7 @@
 		"test": "node . node . test.js"
 	},
 	"files": [
-		"index.js",
-		"patch.txt"
+		"index.js"
 	],
 	"bin": {
 		"coverage": "index.js"