How to remove these unnecessary permissions

I am building a project using android-studio gradle build system. I have two permissions below

android.permission.ACCESS_NETWORK_STATE
android.permission.INTERNET

      

        
        
        
      

    

but the build system automatically adds these new permissions.

android.permission.READ_EXTERNAL_STORAGE maxSdkVersion=18
android.permission.READ_PHONE_STATE
android.permission.WRITE_EXTERNAL_STORAGE maxSdkVersion=18

      

        
        
        
      

    

I don't understand why these permissions are added. And how do I remove these permissions?

Here is my build config

build.gradle

apply plugin: 'com.android.application'

android {
    compileSdkVersion 20
    buildToolsVersion "20.0.0"
    defaultConfig {
        applicationId "my.app.package.name"
        minSdkVersion 8
        targetSdkVersion 20
        versionCode 2
        versionName "1.0.1"
    }
    signingConfigs {
        debug {
            storeFile file(System.getProperty("user.home")+"/.android/debug.keystore")
        }

        release {
            storeFile file("keystore.jks")
            storePassword "password"
            keyAlias "alias"
            keyPassword "password"
       }
    }
    buildTypes {
        /*release {
            runProguard false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }*/
        marketShareRelease {
            debuggable false
            jniDebuggable false
            signingConfig signingConfigs.release
        }
    }
}

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    compile 'com.android.support:appcompat-v7:20.0.0'
    compile 'com.viewpagerindicator:library:2.4.1'
    compile 'com.google.code.gson:gson:2.2.4'
    compile 'com.commonsware.cwac:merge:1.0.2'
}

      

        
        
        
      

    

My previous build is pretty much the same (Oct 8, 2014). Just android studio and sdk are updated