fix(instrumentation): drop diag.debug on InstrumentationBase#init not returning any modules (open-telemetry#4925)

Author: trentm

experimental/CHANGELOG.md

@@ -26,6 +26,7 @@ All notable changes to experimental packages in this project will be documented
 
 * fix(instrumentation-http): Ensure instrumentation of `http.get` and `https.get` work when used in ESM code [#4857](https://github.com/open-telemetry/opentelemetry-js/issues/4857) @trentm
 * fix(api-logs): align AnyValue to spec [#4893](https://github.com/open-telemetry/opentelemetry-js/pull/4893) @blumamir
+* fix(instrumentation): remove diag.debug() message for instrumentations that do not patch modules [#4925](https://github.com/open-telemetry/opentelemetry-js/pull/4925) @trentm
 
 ### :books: (Refine Doc)
 

experimental/packages/opentelemetry-instrumentation/src/platform/node/instrumentation.ts

@@ -66,14 +66,6 @@ export abstract class InstrumentationBase<
 
     this._modules = (modules as InstrumentationModuleDefinition[]) || [];
 
-    if (this._modules.length === 0) {
-      diag.debug(
-        'No modules instrumentation has been defined for ' +
-          `'${this.instrumentationName}@${this.instrumentationVersion}'` +
-          ', nothing will be patched'
-      );
-    }
-
     if (this._config.enabled) {
       this.enable();
     }