Remove redundant types (#268)

The `types` field here only serves to "confuse" TS in the CJS case, and it's redundant
for the ESM case. By removing it, we allow TS to correctly infer the types for both
CJS and ESM since the respective typings are colocated with their entrypoints.

Author: notaphplover

package.json

@@ -25,7 +25,6 @@
 	],
 	"exports": {
 		".": {
-			"types": "./build/esm/index.d.ts",
 			"import": "./build/esm/index.js",
 			"require": "./build/cjs/index.js"
 		}