Don't run dx test in emulator

compiler/android-tests/android-module/build.gradle

@@ -1,7 +1,4 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
-ext {
-    isD8Enabled = project.findProperty('android.enableD8').toBoolean()
-}
 buildscript {
     repositories {
         google()
@@ -60,11 +57,9 @@ android {
         resultsDir = "build/test/results"
     }
 
-    if (isD8Enabled) {
-        compileOptions {
-            sourceCompatibility = 1.8
-            targetCompatibility = 1.8
-        }
+    compileOptions {
+        sourceCompatibility = 1.8
+        targetCompatibility = 1.8
     }
 
     flavorDimensions "box"
@@ -86,15 +81,12 @@ android {
             dimension "box"
         }
 
+        jvm80 {
+            dimension "box"
+        }
 
-        if (isD8Enabled) {
-            jvm80 {
-                dimension "box"
-            }
-
-            reflectjvm80 {
-                dimension "box"
-            }
+        reflectjvm80 {
+            dimension "box"
         }
     }
 

compiler/android-tests/android-module/gradle.properties

@@ -1,3 +1,2 @@
 #don't try to download android specific tools within gradle: licence acceptance will be required
-android.builder.sdkDownload=false
-android.enableD8=true
+android.builder.sdkDownload=false