ci: decomission of CheckStyle

The following issue won't be fixed:
Closes #260
Closes #1015

Part of #1669

.github/workflows/static-analysis.yml

@@ -15,30 +15,6 @@ defaults:
     shell: bash
 
 jobs:
-  run-checkstyle:
-    name: Run CheckStyle
-    # https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idruns-on
-    runs-on: ubuntu-20.04
-    steps:
-      - name: Clone source code
-        uses: actions/[email protected] # https://github.com/actions/checkout
-        with:
-          # Whether to configure the token or SSH key with the local git config. Default: true
-          persist-credentials: false
-      - name: Install JDK
-        uses: actions/[email protected] # https://github.com/actions/setup-java
-        with:
-          distribution: 'adopt' # https://github.com/actions/setup-java#supported-distributions
-          java-version: '8'     # https://github.com/actions/setup-java#supported-version-syntax
-      - name: Restore existing cache
-        uses: actions/[email protected] # https://github.com/actions/cache
-        with:
-          # https://docs.github.com/en/actions/using-workflows/caching-dependencies-to-speed-up-workflows#input-parameters-for-the-cache-action
-          key: maven-repository-${{ hashFiles('pom.xml') }}
-          path: ~/.m2/repository
-          restore-keys: maven-repository-
-      - name: Run CheckStyle
-        run: ./src/main/scripts/execute-command.sh checkstyle
 
   run-pmd:
     name: Run PMD

pom.xml

@@ -569,7 +569,6 @@
 		<bootstrap.version>3.4.1</bootstrap.version>
 
 		<cglib.version>2.2.2</cglib.version>
-		<checkstyle.plugin.version>2.17</checkstyle.plugin.version>
 		<clean.plugin.version>3.0.0</clean.plugin.version>
 
 		<!-- Redefine default value from spring-boot-dependencies -->
@@ -831,20 +830,6 @@
 				</configuration>
 			</plugin>
 
-			<plugin>
-				<groupId>org.apache.maven.plugins</groupId>
-				<artifactId>maven-checkstyle-plugin</artifactId>
-				<version>${checkstyle.plugin.version}</version>
-				<configuration>
-					<enableRSS>false</enableRSS>
-					<consoleOutput>true</consoleOutput>
-					<includeTestSourceDirectory>true</includeTestSourceDirectory>
-					<linkXRef>false</linkXRef>
-					<configLocation>${basedir}/src/main/config/checkstyle.xml</configLocation>
-					<suppressionsLocation>${basedir}/src/main/config/checkstyle-suppressions.xml</suppressionsLocation>
-				</configuration>
-			</plugin>
-
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-clean-plugin</artifactId>

src/main/java/ru/mystamps/web/common/Pager.java

@@ -145,14 +145,12 @@ private static List<Integer> createItems(
 				nextItemsCnt--;
 			}
 
-		// CheckStyle: ignore LineLength for next 3 lines
 		// we've added too much to the beginning
 		} else if (prevItemsCnt > ITEMS_BEFORE_CURRENT && nextItemsCnt <= ITEMS_AFTER_CURRENT) {
 			while (prevItemsCnt > ITEMS_BEFORE_CURRENT && (prevItemsCnt + nextItemsCnt + 1) > MAX_ITEMS) {
 				prevItemsCnt--;
 			}
 
-		// CheckStyle: ignore LineLength for next 3 lines
 		// we've added too much to the end
 		} else if (nextItemsCnt > ITEMS_AFTER_CURRENT && prevItemsCnt <= ITEMS_BEFORE_CURRENT) {
 			while (nextItemsCnt > ITEMS_AFTER_CURRENT && (prevItemsCnt + nextItemsCnt + 1) > MAX_ITEMS) {

src/main/java/ru/mystamps/web/config/MvcConfig.java

@@ -113,7 +113,6 @@ public void addResourceHandlers(ResourceHandlerRegistry registry) {
 		VersionResourceResolver resourceResolver = new VersionResourceResolver()
 			.addFixedVersionStrategy(ResourceUrl.RESOURCES_VERSION, "/**");
 
-		// CheckStyle: ignore MagicNumber for next 1 line
 		CacheControl cacheControl = CacheControl.maxAge(Duration.ofDays(7));
 
 		registry.addResourceHandler("/static/**")
@@ -168,7 +167,6 @@ public void addInterceptors(InterceptorRegistry registry) {
 	}
 
 	@Override
-	// CheckStyle: ignore LineLength for next 2 lines
 	// LATER: remove deprecation and usage of setUseSuffixPatternMatch() during upgrade to Spring Framework 5.3
 	// See: https://docs.spring.io/spring-framework/docs/5.2.22.RELEASE/javadoc-api/org/springframework/web/servlet/config/annotation/PathMatchConfigurer.html#setUseSuffixPatternMatch-java.lang.Boolean-
 	@SuppressWarnings("deprecation")

src/main/java/ru/mystamps/web/feature/account/JdbcUsersActivationDao.java

@@ -38,7 +38,6 @@ public class JdbcUsersActivationDao implements UsersActivationDao {
 	private final String removeByActivationKeySql;
 	private final String addActivationKeySql;
 
-	@SuppressWarnings("checkstyle:linelength")
 	public JdbcUsersActivationDao(Environment env, NamedParameterJdbcTemplate jdbcTemplate) {
 		this.jdbcTemplate             = jdbcTemplate;
 		this.findByActivationKeySql   = env.getRequiredProperty("users_activation.find_by_activation_key");