Remove unneeded quoting

Change-Id: I87f452e338bd4ff0587e3fc7b0bec3f08a1e7fe6
diff --git a/runtime/dex_file.cc b/runtime/dex_file.cc
index 463e673..429c516 100644
--- a/runtime/dex_file.cc
+++ b/runtime/dex_file.cc
@@ -100,7 +100,7 @@
     }
     UniquePtr<ZipEntry> zip_entry(zip_archive->Find(kClassesDex, error_msg));
     if (zip_entry.get() == NULL) {
-      *error_msg = StringPrintf("Zip archive '%s' doesn\'t contain %s (error msg: %s)", filename,
+      *error_msg = StringPrintf("Zip archive '%s' doesn't contain %s (error msg: %s)", filename,
                                 kClassesDex, error_msg->c_str());
       return false;
     }
@@ -177,7 +177,7 @@
     struct stat sbuf;
     memset(&sbuf, 0, sizeof(sbuf));
     if (fstat(fd, &sbuf) == -1) {
-      *error_msg = StringPrintf("DexFile: fstat \'%s\' failed: %s", location, strerror(errno));
+      *error_msg = StringPrintf("DexFile: fstat '%s' failed: %s", location, strerror(errno));
       return nullptr;
     }
     if (S_ISDIR(sbuf.st_mode)) {
@@ -194,7 +194,7 @@
 
   if (map->Size() < sizeof(DexFile::Header)) {
     *error_msg = StringPrintf(
-        "DexFile: failed to open dex file \'%s\' that is too short to have a header", location);
+        "DexFile: failed to open dex file '%s' that is too short to have a header", location);
     return nullptr;
   }
 
diff --git a/runtime/entrypoints/entrypoint_utils.cc b/runtime/entrypoints/entrypoint_utils.cc
index 2806f94..3ab8888 100644
--- a/runtime/entrypoints/entrypoint_utils.cc
+++ b/runtime/entrypoints/entrypoint_utils.cc
@@ -57,7 +57,7 @@
       ThrowLocation throw_location = self->GetCurrentLocationForThrow();
       DCHECK(throw_location.GetMethod() == referrer);
       self->ThrowNewExceptionF(throw_location, "Ljava/lang/InternalError;",
-                               "Found type %s; filled-new-array not implemented for anything but \'int\'",
+                               "Found type %s; filled-new-array not implemented for anything but 'int'",
                                PrettyDescriptor(klass).c_str());
     }
     return nullptr;  // Failure
diff --git a/runtime/interpreter/interpreter_common.cc b/runtime/interpreter/interpreter_common.cc
index ca066b6..5b9e55f 100644
--- a/runtime/interpreter/interpreter_common.cc
+++ b/runtime/interpreter/interpreter_common.cc
@@ -188,7 +188,7 @@
     } else {
       self->ThrowNewExceptionF(shadow_frame.GetCurrentLocationForThrow(),
                                "Ljava/lang/InternalError;",
-                               "Found type %s; filled-new-array not implemented for anything but \'int\'",
+                               "Found type %s; filled-new-array not implemented for anything but 'int'",
                                PrettyDescriptor(componentClass).c_str());
     }
     return false;