rollback otel tests (#686)

Author: KirillKurdyukov

query/pom.xml

@@ -36,18 +36,6 @@
             <optional>true</optional>
         </dependency>
 
-        <dependency>
-            <groupId>io.opentelemetry</groupId>
-            <artifactId>opentelemetry-sdk</artifactId>
-            <version>${opentelemetry.version}</version>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>io.opentelemetry</groupId>
-            <artifactId>opentelemetry-sdk-testing</artifactId>
-            <version>${opentelemetry.version}</version>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>

query/src/test/java/tech/ydb/query/impl/QueryTracingTest.java

@@ -586,6 +586,12 @@ boolean hasLongAttribute(String key) {
 
         @Override
         public String getId() {
+            // Transport reads TRACEPARENT via getId() on the call path; span must already be current.
+            Assert.assertSame(
+                    "Span must be current when getId() is called (missing makeCurrent?)",
+                    this,
+                    tracer.currentSpan.get()
+            );
             return name + ":" + kind;
         }