Remove unused imports from metric factories

Fixes detekt UnusedImports warnings in:
- MetricDataTypeFactory.kt
- PointDataFactory.kt
- SessionMetricDataTypeFactory.kt

Signed-off-by: Gregory-Rasmussen_cvsh <[email protected]>

Author: gregory-at-cvs

core/src/main/java/io/opentelemetry/android/export/factories/MetricDataTypeFactory.kt

@@ -7,7 +7,6 @@ package io.opentelemetry.android.export.factories
 
 import io.opentelemetry.api.common.Attributes
 import io.opentelemetry.sdk.metrics.data.Data
-import io.opentelemetry.sdk.metrics.data.PointData
 
 /**
  * Factory for creating metric [Data] instances with injected attributes.

core/src/main/java/io/opentelemetry/android/export/factories/PointDataFactory.kt

@@ -6,12 +6,7 @@
 package io.opentelemetry.android.export.factories
 
 import io.opentelemetry.api.common.Attributes
-import io.opentelemetry.sdk.metrics.data.DoublePointData
-import io.opentelemetry.sdk.metrics.data.ExponentialHistogramPointData
-import io.opentelemetry.sdk.metrics.data.HistogramPointData
-import io.opentelemetry.sdk.metrics.data.LongPointData
 import io.opentelemetry.sdk.metrics.data.PointData
-import io.opentelemetry.sdk.metrics.data.SummaryPointData
 
 /**
  * Factory for creating [PointData] instances with injected attributes.

core/src/main/java/io/opentelemetry/android/export/factories/SessionMetricDataTypeFactory.kt

@@ -13,14 +13,11 @@ import io.opentelemetry.android.export.models.SummaryWithSessionData
 import io.opentelemetry.api.common.Attributes
 import io.opentelemetry.sdk.metrics.data.Data
 import io.opentelemetry.sdk.metrics.data.ExponentialHistogramData
-import io.opentelemetry.sdk.metrics.data.ExponentialHistogramPointData
 import io.opentelemetry.sdk.metrics.data.GaugeData
 import io.opentelemetry.sdk.metrics.data.HistogramData
-import io.opentelemetry.sdk.metrics.data.HistogramPointData
 import io.opentelemetry.sdk.metrics.data.PointData
 import io.opentelemetry.sdk.metrics.data.SumData
 import io.opentelemetry.sdk.metrics.data.SummaryData
-import io.opentelemetry.sdk.metrics.data.SummaryPointData
 
 /**
  * A [MetricDataTypeFactory] that creates metric Data instances with session attributes injected.