Revert "[Retrace] Account for non-ascii std-in input"

This reverts commit 2e135f3426dcda6b36ace8d60c4d4b662047b66e.

Reason for revert: Broken on windows

Change-Id: I052b494fa0704eeb5a5fd106e4f8048136a43aae
diff --git a/src/main/java/com/android/tools/r8/retrace/Retrace.java b/src/main/java/com/android/tools/r8/retrace/Retrace.java
index b612ac0..af2b520 100644
--- a/src/main/java/com/android/tools/r8/retrace/Retrace.java
+++ b/src/main/java/com/android/tools/r8/retrace/Retrace.java
@@ -17,9 +17,7 @@
 import com.android.tools.r8.utils.StringDiagnostic;
 import com.android.tools.r8.utils.StringUtils;
 import com.android.tools.r8.utils.Timing;
-import com.google.common.base.Charsets;
 import java.io.IOException;
-import java.io.InputStreamReader;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
@@ -212,7 +210,7 @@
   }
 
   private static List<String> getStackTraceFromStandardInput() {
-    Scanner sc = new Scanner(new InputStreamReader(System.in, Charsets.UTF_8));
+    Scanner sc = new Scanner(System.in);
     List<String> readLines = new ArrayList<>();
     while (sc.hasNext()) {
       readLines.add(sc.nextLine());
diff --git a/src/test/java/com/android/tools/r8/internal/retrace/RetraceTests.java b/src/test/java/com/android/tools/r8/internal/retrace/RetraceTests.java
index 7dfc522..6fea76f 100644
--- a/src/test/java/com/android/tools/r8/internal/retrace/RetraceTests.java
+++ b/src/test/java/com/android/tools/r8/internal/retrace/RetraceTests.java
@@ -16,7 +16,6 @@
 import com.android.tools.r8.retrace.Retrace;
 import com.android.tools.r8.retrace.RetraceCommand;
 import com.android.tools.r8.retrace.stacktraces.StackTraceForTest;
-import java.util.ArrayList;
 import java.util.List;
 import java.util.function.BiConsumer;
 import junit.framework.TestCase;
@@ -33,8 +32,6 @@
     return getTestParameters().withNoneRuntime().build();
   }
 
-  private static String SMILEY_EMOJI = "\uD83D\uDE00";
-
   public RetraceTests(TestParameters parameters) {}
 
   @Test
@@ -52,39 +49,6 @@
     runRetraceTest(new VelvetStackTrace());
   }
 
-  @Test
-  public void testNonAscii() {
-    CronetStackTrace cronetStackTrace = new CronetStackTrace();
-    runRetraceTest(
-        new StackTraceForTest() {
-          @Override
-          public List<String> obfuscatedStackTrace() {
-            ArrayList<String> smileyObf = new ArrayList<>();
-            smileyObf.add(SMILEY_EMOJI);
-            smileyObf.addAll(cronetStackTrace.obfuscatedStackTrace());
-            return smileyObf;
-          }
-
-          @Override
-          public String mapping() {
-            return cronetStackTrace.mapping();
-          }
-
-          @Override
-          public List<String> retracedStackTrace() {
-            ArrayList<String> smileyObf = new ArrayList<>();
-            smileyObf.add(SMILEY_EMOJI);
-            smileyObf.addAll(cronetStackTrace.retracedStackTrace());
-            return smileyObf;
-          }
-
-          @Override
-          public int expectedWarnings() {
-            return 0;
-          }
-        });
-  }
-
   private TestDiagnosticMessagesImpl runRetraceTest(StackTraceForTest stackTraceForTest) {
     return runRetraceTest(stackTraceForTest, DEFAULT_REGULAR_EXPRESSION);
   }
diff --git a/src/test/java/com/android/tools/r8/retrace/RetraceCommandLineTests.java b/src/test/java/com/android/tools/r8/retrace/RetraceCommandLineTests.java
index 22e7820..e8494d6 100644
--- a/src/test/java/com/android/tools/r8/retrace/RetraceCommandLineTests.java
+++ b/src/test/java/com/android/tools/r8/retrace/RetraceCommandLineTests.java
@@ -125,16 +125,6 @@
     assertEquals(Retrace.USAGE_MESSAGE, processResult.stdout);
   }
 
-  @Test
-  public void testNonAscii() throws IOException {
-    runTest("", "\uD83D\uDE00", false, "\uD83D\uDE00" + StringUtils.LINE_SEPARATOR);
-  }
-
-  @Test
-  public void testNonAsciiStdIn() throws IOException {
-    runTest("", "\uD83D\uDE00", true, "\uD83D\uDE00" + StringUtils.LINE_SEPARATOR);
-  }
-
   private final String nonMappableStackTrace =
       StringUtils.lines(
           "com.android.r8.R8Exception: Problem when compiling program",