Delete deprecated zero-arg `DefaultBandwidthMeter` constructor

Use `DefaultBandwidthMeter.Builder` instead.

#minor-release

PiperOrigin-RevId: 532069549
(cherry picked from commit 8a9ac8a9de8a62f33f61257ace98440f4ab22bfc)

library/core/src/main/java/com/google/android/exoplayer2/upstream/DefaultBandwidthMeter.java

@@ -292,19 +292,6 @@ public final class DefaultBandwidthMeter implements BandwidthMeter, TransferList
   private boolean networkTypeOverrideSet;
   private @C.NetworkType int networkTypeOverride;
 
-  /**
-   * @deprecated Use {@link Builder} instead.
-   */
-  @Deprecated
-  public DefaultBandwidthMeter() {
-    this(
-        /* context= */ null,
-        /* initialBitrateEstimates= */ ImmutableMap.of(),
-        DEFAULT_SLIDING_WINDOW_MAX_WEIGHT,
-        Clock.DEFAULT,
-        /* resetOnNetworkTypeChange= */ false);
-  }
-
   private DefaultBandwidthMeter(
       @Nullable Context context,
       Map<Integer, Long> initialBitrateEstimates,

library/core/src/test/java/com/google/android/exoplayer2/upstream/DefaultBandwidthMeterTest.java

@@ -686,19 +686,13 @@ public final class DefaultBandwidthMeterTest {
   }
 
   @Test
-  @SuppressWarnings("deprecation")
   public void defaultInitialBitrateEstimate_withoutContext_isReasonable() {
-    DefaultBandwidthMeter bandwidthMeterWithBuilder =
+    DefaultBandwidthMeter bandwidthMeter =
         new DefaultBandwidthMeter.Builder(/* context= */ null).build();
-    long initialEstimateWithBuilder = bandwidthMeterWithBuilder.getBitrateEstimate();
-
-    DefaultBandwidthMeter bandwidthMeterWithoutBuilder = new DefaultBandwidthMeter();
-    long initialEstimateWithoutBuilder = bandwidthMeterWithoutBuilder.getBitrateEstimate();
+    long initialEstimate = bandwidthMeter.getBitrateEstimate();
 
-    assertThat(initialEstimateWithBuilder).isGreaterThan(100_000L);
-    assertThat(initialEstimateWithBuilder).isLessThan(50_000_000L);
-    assertThat(initialEstimateWithoutBuilder).isGreaterThan(100_000L);
-    assertThat(initialEstimateWithoutBuilder).isLessThan(50_000_000L);
+    assertThat(initialEstimate).isGreaterThan(100_000L);
+    assertThat(initialEstimate).isLessThan(50_000_000L);
   }
 
   private void setActiveNetworkInfo(NetworkInfo networkInfo) {