2 files changed, 4 insertions, 26 deletions
diff --git a/impl_core/src/main/java/io/opencensus/implcore/internal/CheckerFrameworkUtils.java b/impl_core/src/main/java/io/opencensus/implcore/internal/CheckerFrameworkUtils.java
index 7b961978..f08289cf 100644
--- a/impl_core/src/main/java/io/opencensus/implcore/internal/CheckerFrameworkUtils.java
+++ b/impl_core/src/main/java/io/opencensus/implcore/internal/CheckerFrameworkUtils.java
@@ -16,13 +16,8 @@
 
 package io.opencensus.implcore.internal;
 
-import io.opencensus.common.Function;
 import javax.annotation.Nullable;
 
-/*>>>
-import org.checkerframework.checker.nullness.qual.KeyForBottom;
-*/
-
 /**
  * Utility methods for suppressing nullness warnings and working around Checker Framework issues.
  */
@@ -35,16 +30,4 @@ public final class CheckerFrameworkUtils {
   public static <T> T castNonNull(@Nullable T arg) {
     return arg;
   }
-
-  /**
-   * Works around https://github.com/typetools/checker-framework/issues/1712 by removing {@code ?
-   * super} from a {@code Function}'s argument type.
-   */
-  // TODO(sebright): Remove this method once the issue is fixed.
-  public static <A, B> Function<A, B> removeSuperFromFunctionParameterType(
-      Function<? super /*@KeyForBottom*/ A, B> function) {
-    @SuppressWarnings("unchecked")
-    Function<A, B> castFunction = (Function<A, B>) function;
-    return castFunction;
-  }
 }
diff --git a/impl_core/src/main/java/io/opencensus/implcore/stats/MutableAggregation.java b/impl_core/src/main/java/io/opencensus/implcore/stats/MutableAggregation.java
index 49124b00..deabdce7 100644
--- a/impl_core/src/main/java/io/opencensus/implcore/stats/MutableAggregation.java
+++ b/impl_core/src/main/java/io/opencensus/implcore/stats/MutableAggregation.java
@@ -20,7 +20,6 @@ import static com.google.common.base.Preconditions.checkArgument;
 import static com.google.common.base.Preconditions.checkNotNull;
 
 import io.opencensus.common.Function;
-import io.opencensus.implcore.internal.CheckerFrameworkUtils;
 import io.opencensus.stats.Aggregation;
 import io.opencensus.stats.BucketBoundaries;
 
@@ -100,8 +99,7 @@ abstract class MutableAggregation {
         Function<? super MutableCount, T> p1,
         Function<? super MutableMean, T> p2,
         Function<? super MutableDistribution, T> p3) {
-      return CheckerFrameworkUtils.<MutableSum, T>removeSuperFromFunctionParameterType(p0)
-          .apply(this);
+      return p0.apply(this);
     }
   }
 
@@ -147,8 +145,7 @@ abstract class MutableAggregation {
         Function<? super MutableCount, T> p1,
         Function<? super MutableMean, T> p2,
         Function<? super MutableDistribution, T> p3) {
-      return CheckerFrameworkUtils.<MutableCount, T>removeSuperFromFunctionParameterType(p1)
-          .apply(this);
+      return p1.apply(this);
     }
   }
 
@@ -216,8 +213,7 @@ abstract class MutableAggregation {
         Function<? super MutableCount, T> p1,
         Function<? super MutableMean, T> p2,
         Function<? super MutableDistribution, T> p3) {
-      return CheckerFrameworkUtils.<MutableMean, T>removeSuperFromFunctionParameterType(p2)
-          .apply(this);
+      return p2.apply(this);
     }
   }
 
@@ -359,8 +355,7 @@ abstract class MutableAggregation {
         Function<? super MutableCount, T> p1,
         Function<? super MutableMean, T> p2,
         Function<? super MutableDistribution, T> p3) {
-      return CheckerFrameworkUtils.<MutableDistribution, T>removeSuperFromFunctionParameterType(p3)
-          .apply(this);
+      return p3.apply(this);
     }
   }
 }