Drop a little bit of ceremony

api/pom.xml

diff --git a/api/pom.xml b/api/pom.xml
index 7967db0..87486e0 100644
--- a/api/pom.xml
+++ b/api/pom.xml
@@ -103,7 +103,7 @@
             </resource>
         </resources>
         <plugins>
-            <!-- Sets minimal Maven version to 3.6.0 -->
+            <!-- Sets minimal Maven version -->
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-enforcer-plugin</artifactId>
@@ -118,7 +118,6 @@
                             <rules>
                                 <requireMavenVersion>
                                     <version>3.6.0</version>
-                                    <message>You need Maven 3.6.0 or higher</message>
                                 </requireMavenVersion>
                             </rules>
                         </configuration>

impl/pom.xml

diff --git a/impl/pom.xml b/impl/pom.xml
index abe95e4..92842ba 100644
--- a/impl/pom.xml
+++ b/impl/pom.xml
@@ -106,7 +106,7 @@
             </resource>
         </resources>
         <plugins>
-            <!-- Sets minimal Maven version to 3.6.0 -->
+            <!-- Sets minimal Maven version -->
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-enforcer-plugin</artifactId>
@@ -121,7 +121,6 @@
                             <rules>
                                 <requireMavenVersion>
                                     <version>3.6.0</version>
-                                    <message>You need Maven 3.6.0 or higher</message>
                                 </requireMavenVersion>
                             </rules>
                         </configuration>

pom.xml

diff --git a/pom.xml b/pom.xml
index d2cd9bc..6e35168 100644
--- a/pom.xml
+++ b/pom.xml
@@ -44,7 +44,7 @@
 
     <build>
         <plugins>
-            <!-- Sets minimal Maven version to 3.5.4 -->
+            <!-- Sets minimal Maven version -->
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-enforcer-plugin</artifactId>
@@ -58,7 +58,7 @@
                         <configuration>
                             <rules>
                                 <requireMavenVersion>
-                                    <version>3.5.4</version>
+                                    <version>3.6.0</version>
                                 </requireMavenVersion>
                             </rules>
                         </configuration>

spec/pom.xml

diff --git a/spec/pom.xml b/spec/pom.xml
index 090d908..3c031e4 100644
--- a/spec/pom.xml
+++ b/spec/pom.xml
@@ -94,7 +94,7 @@
     <build>
         <defaultGoal>package</defaultGoal>
         <plugins>
-            <!-- Sets minimal Maven version to 3.6.0 and Java version to 11 -->
+            <!-- Sets minimal Maven version and Java version-->
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-enforcer-plugin</artifactId>
@@ -109,11 +109,9 @@
                             <rules>
                                 <requireMavenVersion>
                                     <version>3.6.0</version>
-                                    <message>You need Maven 3.6.0 or higher</message>
                                 </requireMavenVersion>
                                 <requireJavaVersion>
                                     <version>11</version>
-                                    <message>You need Java 11 or higher</message>
                                 </requireJavaVersion>
                             </rules>
                         </configuration>