Remove flush method on LogEmitter (open-telemetry#2405)

Fixes open-telemetry#2342 ## Changes This change proposes to remove the `flush` on Emitter for the consistency. There is no `flush` on Tracer/Meter specification. Language sdk implementations may choose the idiomatic way to provide the appender/handler ability to call flush on the `LogEmitterProvider` (ex: setter in [java](https://github.com/open-telemetry/opentelemetry-java-instrumentation/blob/main/instrumentation/log4j/log4j-appender-2.16/library/src/main/java/io/opentelemetry/instrumentation/log4j/appender/v2_16/OpenTelemetryAppender.java#L86-L95), `init` arg in py, or possibly a global accessor for provider etc...)
carlosalberto · Mar 21, 2022 · 1e944ec · 1e944ec
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -45,6 +45,9 @@ release.
 
 ### Logs
 
+- Remove `flush` method on LogEmitter
+  ([#2405](https://github.com/open-telemetry/opentelemetry-specification/pull/2405))
+
 ### Resource
 
 ### Semantic Conventions

diff --git a/specification/logs/logging-library-sdk.md b/specification/logs/logging-library-sdk.md
@@ -63,8 +63,6 @@ Methods:
   e.g.
   [Java discussion](https://github.com/open-telemetry/opentelemetry-java/pull/3759#discussion_r738019425))
 
-- Flush.
-
 ### LogRecord
 
 See LogRecord [data model](data-model.md) for the list of fields.
-Original file line number
+Diff line change
@@ Expand Up / @@ -63,8 +63,6 @@ Methods: @@
       e.g.
       [Java discussion](https://github.com/open-telemetry/opentelemetry-java/pull/3759#discussion_r738019425))
-    - Flush.
     ### LogRecord
     See LogRecord [data model](data-model.md) for the list of fields.
@@ Expand Down @@