Warning in `quarkus:dev` when using `quarkus-smallrye-graphql`
### Describe the bug

When running in dev mode (`quarkus:dev`) with the `quarkus-smallrye-graphql` extension, an unexpected warning is printed out:
```
2021-10-27 09:40:54,889 WARN  [io.qua.run.con.ConfigRecorder] (Quarkus Main Thread) Build time property cannot be changed at runtime:
 - quarkus.smallrye-graphql.print-data-fetcher-exception was 'null' at build time and is now 'true'
```

### Expected behavior

Aforementioned warning is not present in the log output.

### Actual behavior

Aforementioned warning is present in the log output.

### How to Reproduce?

Steps to reproduce:
1. 
```
wget -O ./smallrye-qraphql-warn-reproducer.zip "https://code.quarkus.io/api/download?S=io.quarkus.platform:2.3&a=smallrye-qraphql-warn-reproducer&nc=true&e=quarkus-smallrye-graphql"
```
Alternatively for `2.4`:
```
wget -O ./smallrye-qraphql-warn-reproducer.zip "https://code.quarkus.io/api/download?S=io.quarkus.platform:2.4&a=smallrye-qraphql-warn-reproducer&nc=true&e=quarkus-smallrye-graphql"
```

2.
```
unzip ./smallrye-qraphql-warn-reproducer.zip
cd ./smallrye-qraphql-warn-reproducer/
./mvnw clean quarkus:dev
```


### Output of `uname -a` or `ver`

_No response_

### Output of `java -version`

openjdk version "11.0.11" 2021-04-20 OpenJDK Runtime Environment AdoptOpenJDK-11.0.11+9 (build 11.0.11+9) OpenJDK 64-Bit Server VM AdoptOpenJDK-11.0.11+9 (build 11.0.11+9, mixed mode)

### GraalVM version (if different from Java)

_No response_

### Quarkus version or git rev

2.3.1.Final, 2.4.0.CR1

### Build tool (ie. output of `mvnw --version` or `gradlew --version`)

Apache Maven 3.8.1 (05c21c65bdfed0f71a2f2ada8b84da59348c4c5d)

### Additional information

_No response_
diff --git a/extensions/smallrye-graphql/deployment/src/main/java/io/quarkus/smallrye/graphql/deployment/SmallRyeGraphQLProcessor.java b/extensions/smallrye-graphql/deployment/src/main/java/io/quarkus/smallrye/graphql/deployment/SmallRyeGraphQLProcessor.java
index 84058828434..8c059f1dfd9 100644
--- a/extensions/smallrye-graphql/deployment/src/main/java/io/quarkus/smallrye/graphql/deployment/SmallRyeGraphQLProcessor.java
+++ b/extensions/smallrye-graphql/deployment/src/main/java/io/quarkus/smallrye/graphql/deployment/SmallRyeGraphQLProcessor.java
@@ -417,7 +417,7 @@ void printDataFetcherExceptionInDevMode(SmallRyeGraphQLConfig graphQLConfig,
             LaunchModeBuildItem launchMode,
             BuildProducer<SystemPropertyBuildItem> systemProperties) {
 
-        // User did not set this explisitly 
+        // User did not set this explicitly
         if (!graphQLConfig.printDataFetcherException.isPresent()) {
             if (launchMode.getLaunchMode().isDevOrTest()) {
                 systemProperties.produce(new SystemPropertyBuildItem(ConfigKey.PRINT_DATAFETCHER_EXCEPTION, TRUE));
diff --git a/extensions/smallrye-graphql/runtime/src/main/java/io/quarkus/smallrye/graphql/runtime/SmallRyeGraphQLConfigMapping.java b/extensions/smallrye-graphql/runtime/src/main/java/io/quarkus/smallrye/graphql/runtime/SmallRyeGraphQLConfigMapping.java
index 2eedffe9e10..2625810641a 100644
--- a/extensions/smallrye-graphql/runtime/src/main/java/io/quarkus/smallrye/graphql/runtime/SmallRyeGraphQLConfigMapping.java
+++ b/extensions/smallrye-graphql/runtime/src/main/java/io/quarkus/smallrye/graphql/runtime/SmallRyeGraphQLConfigMapping.java
@@ -42,7 +42,6 @@ private static Map<String, String> relocations() {
         mapKey(relocations, ConfigKey.ALLOW_POST_WITH_QUERY_PARAMETERS, QUARKUS_HTTP_POST_QUERYPARAMETERS_ENABLED);
         mapKey(relocations, ConfigKey.ERROR_EXTENSION_FIELDS, QUARKUS_ERROR_EXTENSION_FIELDS);
         mapKey(relocations, ConfigKey.DEFAULT_ERROR_MESSAGE, QUARKUS_DEFAULT_ERROR_MESSAGE);
-        mapKey(relocations, ConfigKey.PRINT_DATAFETCHER_EXCEPTION, QUARKUS_PRINT_DATAFETCHER_EXCEPTION);
         mapKey(relocations, ConfigKey.SCHEMA_INCLUDE_SCALARS, QUARKUS_SCHEMA_INCLUDE_SCALARS);
         mapKey(relocations, ConfigKey.SCHEMA_INCLUDE_DEFINITION, QUARKUS_SCHEMA_INCLUDE_DEFINITION);
         mapKey(relocations, ConfigKey.SCHEMA_INCLUDE_DIRECTIVES, QUARKUS_SCHEMA_INCLUDE_DIRECTIVES);
['extensions/smallrye-graphql/deployment/src/main/java/io/quarkus/smallrye/graphql/deployment/SmallRyeGraphQLProcessor.java', 'extensions/smallrye-graphql/runtime/src/main/java/io/quarkus/smallrye/graphql/runtime/SmallRyeGraphQLConfigMapping.java']