Exclude samples from composite gradle build (#337)

Exclude samples from composite gradle build

## Motivation and Context
Circular dependency in composite build. Let's make samples more
independent

## How Has This Been Tested?
CI

## Breaking Changes
No

## Types of changes
<!-- What types of changes does your code introduce? Put an `x` in all
the boxes that apply: -->
- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to change)
- [ ] Documentation update
- [x] Build configuration update

## Checklist
<!-- Go over all the following points, and put an `x` in all the boxes
that apply. -->
- [x] I have read the [MCP
Documentation](https://modelcontextprotocol.io)
- [x] My code follows the repository's style guidelines
- [ ] New and existing tests pass locally
- [ ] I have added appropriate error handling
- [ ] I have added or updated documentation as needed

## Additional context
<!-- Add any other context, implementation notes, or design decisions
-->

Author: kpavlov

settings.gradle.kts

@@ -24,23 +24,3 @@ include(
     ":kotlin-sdk",
     ":kotlin-sdk-test",
 )
-
-// Include sample projects as composite builds if this is the root project
-// if (gradle.parent == null) {
-includeBuild("samples/kotlin-mcp-client") {
-    dependencySubstitution {
-        substitute(module("io.modelcontextprotocol:kotlin-sdk-client"))
-            .using(project(":"))
-    }
-}
-// includeBuild("samples/kotlin-mcp-server")
-
-includeBuild("samples/weather-stdio-server") {
-    dependencySubstitution {
-        substitute(module("io.modelcontextprotocol:kotlin-sdk-client"))
-            .using(project(":"))
-        substitute(module("io.modelcontextprotocol:kotlin-sdk-server"))
-            .using(project(":"))
-    }
-}
-// }