diff --git a/datetime/src/main/java/tools/jackson/datatype/jsr310/deser/InstantDeserializer.java b/datetime/src/main/java/tools/jackson/datatype/jsr310/deser/InstantDeserializer.java
index de781b85..18d619d7 100644
--- a/datetime/src/main/java/tools/jackson/datatype/jsr310/deser/InstantDeserializer.java
+++ b/datetime/src/main/java/tools/jackson/datatype/jsr310/deser/InstantDeserializer.java
@@ -169,24 +169,6 @@ protected InstantDeserializer(Class<T> supportedType,
         _alwaysAllowStringifiedDateTimestamps = readNumericStringsAsTimestamp;
     }
 
-    /**
-     * @deprecated Since 2.16, use {@link #InstantDeserializer(Class,DateTimeFormatter,
-     * Function,Function,Function,BiFunction,boolean,boolean,boolean)} instead.
-     */
-    @Deprecated()
-    protected InstantDeserializer(Class<T> supportedType,
-                                  DateTimeFormatter formatter,
-                                  Function<TemporalAccessor, T> parsedToValue,
-                                  Function<FromIntegerArguments, T> fromMilliseconds,
-                                  Function<FromDecimalArguments, T> fromNanoseconds,
-                                  BiFunction<T, ZoneId, T> adjust,
-                                  boolean replaceZeroOffsetAsZ
-    ) {
-        this(supportedType, formatter, parsedToValue, fromMilliseconds, fromNanoseconds,
-                adjust, replaceZeroOffsetAsZ,
-                DEFAULT_NORMALIZE_ZONE_ID, DEFAULT_ALWAYS_ALLOW_STRINGIFIED_DATE_TIMESTAMPS);
-    }
-
     @SuppressWarnings("unchecked")
     protected InstantDeserializer(InstantDeserializer<T> base, DateTimeFormatter f)
     {
diff --git a/datetime/src/main/java/tools/jackson/datatype/jsr310/util/DecimalUtils.java b/datetime/src/main/java/tools/jackson/datatype/jsr310/util/DecimalUtils.java
index ca386ac7..15f022af 100644
--- a/datetime/src/main/java/tools/jackson/datatype/jsr310/util/DecimalUtils.java
+++ b/datetime/src/main/java/tools/jackson/datatype/jsr310/util/DecimalUtils.java
@@ -26,12 +26,9 @@
  * Utilities to aid in the translation of decimal types to/from multiple parts.
  *
  * @author Nick Williams
- * @since 2.2
  */
 public final class DecimalUtils
 {
-    private static final BigDecimal ONE_BILLION = new BigDecimal(1_000_000_000L);
-
     private DecimalUtils() { }
 
     public static String toDecimal(long seconds, int nanoseconds)
@@ -81,8 +78,6 @@ public static String toDecimal(long seconds, int nanoseconds)
     /**
      * Factory method for constructing {@link BigDecimal} out of second, nano-second
      * components.
-     *
-     * @since 2.8
      */
     public static BigDecimal toBigDecimal(long seconds, int nanoseconds)
     {
@@ -97,24 +92,10 @@ public static BigDecimal toBigDecimal(long seconds, int nanoseconds)
         return NumberInput.parseBigDecimal(toDecimal(seconds, nanoseconds));
     }
 
-    /**
-     * @deprecated due to potential unbounded latency on some JRE releases.
-     */
-    @Deprecated // since 2.9.8
-    public static int extractNanosecondDecimal(BigDecimal value, long integer)
-    {
-        // !!! 14-Mar-2016, tatu: Somewhat inefficient; should replace with functionally
-        //   equivalent code that just subtracts integral part? (or, measure and show
-        //   there's no difference and do nothing... )
-        return value.subtract(BigDecimal.valueOf(integer)).multiply(ONE_BILLION).intValue();
-    }
-
     /**
      * Extracts the seconds and nanoseconds component of {@code seconds} as {@code long} and {@code int}
      * values, passing them to the given converter.   The implementation avoids latency issues present
      * on some JRE releases.
-     *
-     * @since 2.9.8
      */
     public static <T> T extractSecondsAndNanos(BigDecimal seconds, BiFunction<Long, Integer, T> convert)
     {
diff --git a/datetime/src/test/java/tools/jackson/datatype/jsr310/TestDecimalUtils.java b/datetime/src/test/java/tools/jackson/datatype/jsr310/TestDecimalUtils.java
index 897aa9a6..e94de2b4 100644
--- a/datetime/src/test/java/tools/jackson/datatype/jsr310/TestDecimalUtils.java
+++ b/datetime/src/test/java/tools/jackson/datatype/jsr310/TestDecimalUtils.java
@@ -35,14 +35,10 @@ public void testToDecimal01()
                 "-22704862.599000000", decimal);
     }
 
-    @SuppressWarnings("deprecation")
     private void checkExtractNanos(long expectedSeconds, int expectedNanos, BigDecimal decimal)
     {
         long seconds = decimal.longValue();
         assertEquals("The second part is not correct.", expectedSeconds, seconds);
-
-        int nanoseconds = DecimalUtils.extractNanosecondDecimal(decimal,  seconds);
-        assertEquals("The nanosecond part is not correct.", expectedNanos, nanoseconds);
     }
 
     @Test