When publishing, 70+ languages are shown as supported but my app only has two

When I publish my app, Google Developer console shows that 70+ languages are supported on my APK but I only have two, English and Spanish (values and values-es folders).

I think this happens since I added Google Play services dependency to my project.

How can this be solved? Why is this happening?

You can use the resource shrinking feature of the new build system to restrict which languages are included in your APK. Specifically:

android {
    buildTypes {
        release {
            shrinkResources true
        }
    }
    defaultConfig {
        resConfigs "en", "es"
    }
}