Remove print statements (#264)

Signed-off-by: Pavol Loffay <p.loffay@gmail.com>

Author: pavolloffay

instrumentation/apache-httpclient-4.0/src/main/java/io/opentelemetry/javaagent/instrumentation/hypertrace/apachehttpclient/v4_0/readall/ApacheClientReadAllInstrumentationModule.java

@@ -205,7 +205,6 @@ public static void exit(@Return Object response) {
           }
 
           byte[] bodyBytes = buffer.toByteArray();
-          System.out.printf("Captured response body: %s\n", new String(bodyBytes));
           currentSpan.setAttribute(
               HypertraceSemanticAttributes.HTTP_RESPONSE_BODY.getKey(), new String(bodyBytes));
           ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(bodyBytes);
@@ -216,8 +215,6 @@ public static void exit(@Return Object response) {
           // TODO log
           e.printStackTrace();
         }
-      } else {
-        System.out.println("\n\nIt is not HttpResponse #execute");
       }
     }
   }

instrumentation/servlet/servlet-3.0-no-wrapping/src/test/java/io/opentelemetry/javaagent/instrumentation/hypertrace/servlet/v3_0/nowrapping/response/ServletOutputStreamContextAccessInstrumentationModule.java

@@ -76,7 +76,6 @@ static class TestAdvice {
     public static void enter(
         @Advice.Argument(0) ServletOutputStream servletOutputStream,
         @Advice.Argument(1) BoundedByteArrayOutputStream buffer) {
-      System.out.println("adding to context");
       ContextStore<ServletOutputStream, BoundedByteArrayOutputStream> contextStore =
           InstrumentationContext.get(ServletOutputStream.class, BoundedByteArrayOutputStream.class);
       contextStore.put(servletOutputStream, buffer);

instrumentation/servlet/servlet-rw/src/main/java/io/opentelemetry/javaagent/instrumentation/hypertrace/servlet/rw/reader/BufferedReaderInstrumentation.java

@@ -200,7 +200,6 @@ public static void exit(
         return;
       }
 
-      System.out.println("Capturing readLine");
       if (line == null) {
         bufferSpanPair.captureBody(HypertraceSemanticAttributes.HTTP_REQUEST_BODY);
       } else {

instrumentation/servlet/servlet-rw/src/test/java/org/TestBufferedReader.java

@@ -28,7 +28,6 @@ public TestBufferedReader(Reader in) {
 
   @Override
   public String readLine() throws IOException {
-    System.out.println("override readline");
     return super.readLine();
   }
 }