Remove unneeded tests and dependencies

Author: Ebenezer Ackon

app/build.gradle

@@ -32,6 +32,7 @@ dependencies {
      */
     implementation 'io.reactivex.rxjava2:rxandroid:2.0.1'
     implementation 'io.reactivex.rxjava2:rxkotlin:2.2.0'
+
     // kotlin
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
 
@@ -40,11 +41,6 @@ dependencies {
     implementation 'com.android.support:design:26.1.0'
     implementation 'com.android.support.constraint:constraint-layout:1.0.2'
 
-    // tests
-    testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'com.android.support.test:runner:1.0.1'
-    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
-
     // todo #23
     implementation project(':etherscanapi')
 }