Add serialized Suite trait for Calibration tests; removed old code

TrioTests/CalibrationsTests.swift

@@ -4,7 +4,7 @@ import Testing
 
 @testable import Trio
 
-@Suite("Calibration Service Tests") struct CalibrationTests: Injectable {
+@Suite("Calibration Service Tests", .serialized) struct CalibrationTests: Injectable {
     let fileStorage = BaseFileStorage()
     @Injected() var calibrationService: CalibrationService!
     let resolver = TrioApp().resolver
@@ -74,63 +74,3 @@ import Testing
         #expect(calibrationService.intercept <= 100, "Intercept should not be more than maximum")
     }
 }
-
-// import Swinject
-// @testable import Trio
-// import XCTest
-//
-// class CalibrationsTests: XCTestCase, Injectable {
-//    let fileStorage = BaseFileStorage()
-//    @Injected() var calibrationService: CalibrationService!
-//    let resolver = TrioApp().resolver
-//
-//    override func setUp() {
-//        injectServices(resolver)
-//    }
-//
-//    func testCreateSimpleCalibration() {
-//        // restore state so each test is independent
-//        calibrationService.removeAllCalibrations()
-//
-//        let calibration = Calibration(x: 100.0, y: 102.0)
-//        calibrationService.addCalibration(calibration)
-//
-//        XCTAssertTrue(calibrationService.calibrations.isNotEmpty)
-//
-//        XCTAssertTrue(calibrationService.slope == 1)
-//
-//        XCTAssertTrue(calibrationService.intercept == 2)
-//
-//        XCTAssertTrue(calibrationService.calibrate(value: 104) == 106)
-//    }
-//
-//    func testCreateMultipleCalibration() {
-//        // restore state so each test is independent
-//        calibrationService.removeAllCalibrations()
-//
-//        let calibration = Calibration(x: 100.0, y: 120)
-//        calibrationService.addCalibration(calibration)
-//
-//        let calibration2 = Calibration(x: 120.0, y: 130.0)
-//        calibrationService.addCalibration(calibration2)
-//
-//        XCTAssertEqual(calibrationService.slope, 0.8, accuracy: 0.0001)
-//        XCTAssertEqual(calibrationService.intercept, 37, accuracy: 0.0001)
-//        XCTAssertEqual(calibrationService.calibrate(value: 80), 101, accuracy: 0.0001)
-//
-//        calibrationService.removeLast()
-//
-//        XCTAssertTrue(calibrationService.calibrations.count == 1)
-//
-//        calibrationService.removeAllCalibrations()
-//        XCTAssertTrue(calibrationService.calibrations.isEmpty)
-//    }
-//
-//    override func setUpWithError() throws {
-//        // Put setup code here. This method is called before the invocation of each test method in the class.
-//    }
-//
-//    override func tearDownWithError() throws {
-//        // Put teardown code here. This method is called after the invocation of each test method in the class.
-//    }
-// }