resource/aws_launch_configuration: Remove DescribeLaunchConfiguration…

…s retries on all errors

Reference: hashicorp/terraform#302
Reference: #13409

Does not seem to be occurring anymore, but could require additional load to manifest. Can re-add explicit retries as necessary.

Output from acceptance testing:

```
--- PASS: TestAccAWSLaunchConfiguration_withSpotPrice (11.31s)
--- PASS: TestAccAWSLaunchConfiguration_ebs_noDevice (13.17s)
--- PASS: TestAccAWSLaunchConfiguration_withBlockDevices (13.44s)
--- PASS: TestAccAWSLaunchConfiguration_withInstanceStoreAMI (13.67s)
--- PASS: TestAccAWSLaunchConfiguration_withEncryption (14.02s)
--- PASS: TestAccAWSLaunchConfiguration_basic (22.34s)
--- PASS: TestAccAWSLaunchConfiguration_withIAMProfile (24.19s)
--- PASS: TestAccAWSLaunchConfiguration_encryptedRootBlockDevice (25.59s)
--- PASS: TestAccAWSLaunchConfiguration_userData (28.60s)
--- PASS: TestAccAWSLaunchConfiguration_RootBlockDevice_VolumeSize (28.91s)
--- PASS: TestAccAWSLaunchConfiguration_updateEbsBlockDevices (30.96s)
--- PASS: TestAccAWSLaunchConfiguration_withVpcClassicLink (32.72s)
--- PASS: TestAccAWSLaunchConfiguration_RootBlockDevice_AmiDisappears (353.93s)
```

aws/resource_aws_launch_configuration.go

@@ -503,24 +503,8 @@ func resourceAwsLaunchConfigurationCreate(d *schema.ResourceData, meta interface
 	}
 
 	d.SetId(lcName)
-	log.Printf("[INFO] launch configuration ID: %s", d.Id())
 
-	// We put a Retry here since sometimes eventual consistency bites
-	// us and we need to retry a few times to get the LC to load properly
-	err = resource.Retry(30*time.Second, func() *resource.RetryError {
-		err := resourceAwsLaunchConfigurationRead(d, meta)
-		if err != nil {
-			return resource.RetryableError(err)
-		}
-		return nil
-	})
-	if isResourceTimeoutError(err) {
-		err = resourceAwsLaunchConfigurationRead(d, meta)
-	}
-	if err != nil {
-		return fmt.Errorf("Error reading launch configuration: %s", err)
-	}
-	return nil
+	return resourceAwsLaunchConfigurationRead(d, meta)
 }
 
 func resourceAwsLaunchConfigurationRead(d *schema.ResourceData, meta interface{}) error {