remove prefix

Author: lyra95

src/OpenTelemetry.Exporter.OpenTelemetryProtocol/Implementation/OtlpSpecConfigDefinitions.cs

@@ -11,8 +11,6 @@ namespace OpenTelemetry.Exporter;
 /// </remarks>
 internal static class OtlpSpecConfigDefinitions
 {
-    public const string EnvVarPrefix = "OTEL_";
-    
     public const string DefaultEndpointEnvVarName = "OTEL_EXPORTER_OTLP_ENDPOINT";
     public const string DefaultHeadersEnvVarName = "OTEL_EXPORTER_OTLP_HEADERS";
     public const string DefaultTimeoutEnvVarName = "OTEL_EXPORTER_OTLP_TIMEOUT";

src/OpenTelemetry.Exporter.OpenTelemetryProtocol/OtlpExporterOptions.cs

@@ -62,7 +62,7 @@ internal OtlpExporterOptions(
     {
         Debug.Assert(defaultBatchOptions != null, "defaultBatchOptions was null");
         var finalConfiguration = new ConfigurationBuilder()
-            .AddEnvironmentVariables(OtlpSpecConfigDefinitions.EnvVarPrefix)
+            .AddEnvironmentVariables()
             .AddConfiguration(configuration)
             .Build();