[MNG-6475] Remove unused Guava dependencies

maven-core/pom.xml

@@ -105,10 +105,6 @@ under the License.
       <artifactId>guice</artifactId>
       <classifier>no_aop</classifier>
     </dependency>
-    <dependency>
-      <groupId>com.google.guava</groupId>
-      <artifactId>guava</artifactId>
-    </dependency>
     <dependency>
       <groupId>javax.inject</groupId>
       <artifactId>javax.inject</artifactId>

maven-embedder/pom.xml

@@ -79,10 +79,6 @@ under the License.
        <artifactId>guice</artifactId>
        <classifier>no_aop</classifier>
      </dependency>
-     <dependency>
-      <groupId>com.google.guava</groupId>
-      <artifactId>guava</artifactId>
-    </dependency>
     <dependency>
       <groupId>javax.inject</groupId>
       <artifactId>javax.inject</artifactId>

maven-model-builder/pom.xml

@@ -58,10 +58,6 @@ under the License.
       <groupId>org.apache.maven</groupId>
       <artifactId>maven-builder-support</artifactId>
     </dependency>
-    <dependency>
-      <groupId>com.google.guava</groupId>
-      <artifactId>guava</artifactId>
-    </dependency>
     <dependency>
       <groupId>org.eclipse.sisu</groupId>
       <artifactId>org.eclipse.sisu.plexus</artifactId>

pom.xml

@@ -57,7 +57,6 @@ under the License.
     <plexusVersion>1.7.1</plexusVersion>
     <plexusInterpolationVersion>1.25</plexusInterpolationVersion>
     <plexusUtilsVersion>3.1.0</plexusUtilsVersion>
-    <guavaVersion>20.0</guavaVersion>
     <guiceVersion>4.2.0</guiceVersion>
     <sisuInjectVersion>0.3.3</sisuInjectVersion>
     <wagonVersion>3.1.0</wagonVersion>
@@ -227,11 +226,6 @@ under the License.
         <artifactId>plexus-utils</artifactId>
         <version>${plexusUtilsVersion}</version>
       </dependency>
-      <dependency>
-        <groupId>com.google.guava</groupId>
-        <artifactId>guava</artifactId>
-        <version>${guavaVersion}</version>
-      </dependency>
       <dependency>
         <groupId>com.google.inject</groupId>
         <artifactId>guice</artifactId>