[BEAM-10459] Unignore numeric aggregation tests.

These are passing now thanks to PR #15174.
diff --git a/sdks/java/extensions/sql/zetasql/src/test/java/org/apache/beam/sdk/extensions/sql/zetasql/ZetaSqlMathFunctionsTest.java b/sdks/java/extensions/sql/zetasql/src/test/java/org/apache/beam/sdk/extensions/sql/zetasql/ZetaSqlMathFunctionsTest.java
index 830bb84..92e509c 100644
--- a/sdks/java/extensions/sql/zetasql/src/test/java/org/apache/beam/sdk/extensions/sql/zetasql/ZetaSqlMathFunctionsTest.java
+++ b/sdks/java/extensions/sql/zetasql/src/test/java/org/apache/beam/sdk/extensions/sql/zetasql/ZetaSqlMathFunctionsTest.java
@@ -26,7 +26,6 @@
 import org.apache.beam.sdk.values.Row;
 import org.joda.time.Duration;
 import org.junit.Before;
-import org.junit.Ignore;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.rules.ExpectedException;
@@ -1002,7 +1001,6 @@
   }
 
   @Test
-  @Ignore("[BEAM-10459] Aggregation functions on NUMERIC is not supported yet")
   public void testSumNumeric() {
     String sql = "SELECT SUM(numeric_field) FROM table_with_numeric";
 
@@ -1019,7 +1017,6 @@
   }
 
   @Test
-  @Ignore("[BEAM-10459] Aggregation functions on NUMERIC is not supported yet")
   public void testAvgNumeric() {
     String sql = "SELECT AVG(numeric_field) FROM table_with_numeric";