Remove unused ToolCalls.SEQUENTIAL argument in singleRunStrategy calls (#1219)

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Author: Faanbaria

examples/code-agent/step-01-minimal-agent/src/main/kotlin/Main.kt

@@ -26,7 +26,7 @@ val agent = AIAgent(
         Your goal is to deliver production-ready code changes that integrate seamlessly with the existing codebase and solve given task.
     """.trimIndent(),
 
-    strategy = singleRunStrategy(ToolCalls.SEQUENTIAL),
+    strategy = singleRunStrategy(),
     maxIterations = 100
 ) {
     handleEvents {

examples/code-agent/step-02-add-execution-tool/src/main/kotlin/Main.kt

@@ -37,7 +37,7 @@ val agent = AIAgent(
         Verify your changes don't break existing functionality through regression testing, but prefer running targeted tests over full test suites.
         Note: the codebase may be fully configured or freshly cloned with no dependencies installed - handle any necessary setup steps.
         """.trimIndent(),
-    strategy = singleRunStrategy(ToolCalls.SEQUENTIAL),
+    strategy = singleRunStrategy(),
     maxIterations = 400
 ) {
     handleEvents {