[sdks/android] Pre: Trim unused Android bits.

We don't use UI libraries, don't require UI resources, and don't
require any permissions.

sdks/android/Mentat/library/build.gradle

@@ -34,16 +34,9 @@ android {
 }
 
 dependencies {
-    implementation fileTree(dir: 'libs', include: ['*.jar'])
-    androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2', {
-        exclude group: 'com.android.support', module: 'support-annotations'
-    })
     androidTestImplementation 'com.android.support:support-annotations:27.1.1'
     androidTestImplementation 'com.android.support.test:runner:1.0.2'
     androidTestImplementation 'com.android.support.test:rules:1.0.2'
-    implementation 'com.android.support:appcompat-v7:27.1.1'
-    implementation 'com.android.support.constraint:constraint-layout:1.1.0'
-    implementation 'com.android.support:design:27.1.1'
     testImplementation 'junit:junit:4.12'
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
     implementation 'net.java.dev.jna:jna:4.5.1'

sdks/android/Mentat/library/src/main/AndroidManifest.xml

@@ -1,6 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="org.mozilla.mentat">
-    <uses-permission android:name="android.permission.INTERNET" />
-    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
-</manifest>
+</manifest>

sdks/android/Mentat/library/src/main/res/values/strings.xml

@@ -1,3 +0,0 @@
-<resources>
-    <string name="app_name">Mentat</string>
-</resources>

sdks/android/Mentat/samples/basic/build.gradle

@@ -31,6 +31,8 @@ dependencies {
     implementation project(':library')
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
     implementation "com.android.support:appcompat-v7:27.1.1"
+    implementation 'com.android.support.constraint:constraint-layout:1.1.0'
+    implementation 'com.android.support:design:27.1.1'
 }
 
 repositories {