remove extraneous mustache files. Rebuild samples

Author: Picazsoo

modules/openapi-generator/src/main/resources/kotlin-spring/libraries/spring-declarative-http-interface/README.mustache

@@ -5,5 +5,5 @@ Spring Framework stub
 ## Overview
 This code was generated by the [OpenAPI Generator](https://openapi-generator.tech) project.
 By using the [OpenAPI-Spec](https://openapis.org).
-This generates Spring 6+ declarative HTTP interfaces that can be used to easily instantiate a http client.
+This generates Spring 6+ declarative HTTP interfaces that can be used to easily instantiate an http client.
 ```

modules/openapi-generator/src/main/resources/kotlin-spring/libraries/spring-declarative-http-interface/buildGradle-sb3-Kts.mustache

@@ -58,8 +58,8 @@ dependencies {
     implementation("com.fasterxml.jackson.datatype:jackson-datatype-jsr310")
     implementation("com.fasterxml.jackson.module:jackson-module-kotlin")
 
-    implementation("org.springframework.cloud:spring-cloud-starter-openfeign"){{#hasAuthMethods}}
-        implementation("org.springframework.cloud:spring-cloud-starter-oauth2:2.2.5.RELEASE"){{/hasAuthMethods}}
+{{#hasAuthMethods}}
+    implementation("org.springframework.cloud:spring-cloud-starter-oauth2:2.2.5.RELEASE"){{/hasAuthMethods}}
 
 {{#useBeanValidation}}
     implementation("jakarta.validation:jakarta.validation-api"){{/useBeanValidation}}

modules/openapi-generator/src/main/resources/kotlin-spring/libraries/spring-declarative-http-interface/buildGradleKts.mustache

@@ -194,10 +194,6 @@
             <artifactId>jsr305</artifactId>
             <version>${findbugs-jsr305.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.springframework.cloud</groupId>
-            <artifactId>spring-cloud-starter-openfeign</artifactId>
-        </dependency>
         {{#hasAuthMethods}}
         <dependency>
             <groupId>org.springframework.cloud</groupId>