Mark SdkMeter as pub(crate) (#2113)

Co-authored-by: Cijo Thomas <cijo.thomas@gmail.com>

Author: utpilla

opentelemetry-sdk/src/metrics/meter.rs

@@ -42,7 +42,7 @@ const INSTRUMENT_UNIT_INVALID_CHAR: &str = "characters in instrument unit must b
 /// See the [Meter API] docs for usage.
 ///
 /// [Meter API]: opentelemetry::metrics::Meter
-pub struct SdkMeter {
+pub(crate) struct SdkMeter {
     scope: Scope,
     pipes: Arc<Pipelines>,
     u64_resolver: Resolver<u64>,

opentelemetry-sdk/src/metrics/mod.rs

@@ -55,7 +55,6 @@ pub(crate) mod view;
 pub use aggregation::*;
 pub use instrument::*;
 pub use manual_reader::*;
-pub use meter::*;
 pub use meter_provider::*;
 pub use periodic_reader::*;
 pub use pipeline::Pipeline;