Remove unused variable assignments

exceptions/page/MDPageNotInAggregatedException.php

@@ -13,8 +13,7 @@ final class MDPageNotInAggregatedException extends Exception {
      */
     public function errorMessage() {
         //error message
-        $errorMsg = 'There is no entity to be shown here (id: <b>' . $this->getMessage() . '</b>).';
-        return $errorMsg;
+        return 'There is no entity to be shown here (id: <b>' . $this->getMessage() . '</b>).';
 
     }
 }

exceptions/page/MDmainEntityNotPublicException.php

@@ -13,8 +13,7 @@ final class MDmainEntityNotPublicException extends Exception {
      */
     public function errorMessage() {
         //error message
-        $errorMsg = 'There is no entity to be shown here (id: <b>' . $this->getMessage() . '</b>).';
-        return $errorMsg;
+        return 'There is no entity to be shown here (id: <b>' . $this->getMessage() . '</b>).';
 
     }
 }

exceptions/page/MDpageParameterMissingException.php

@@ -12,8 +12,7 @@ final class MDpageParameterMissingException extends Exception {
      */
     public function errorMessage() {
         //error message
-        $errorMsg = 'Parameter: <b>' . $this->getMessage() . '</b> is required but missing.';
-        return $errorMsg;
+        return 'Parameter: <b>' . $this->getMessage() . '</b> is required but missing.';
 
     }
 }

exceptions/page/MDpageParameterNotNumericException.php

@@ -12,8 +12,7 @@ final class MDpageParameterNotNumericException extends Exception {
      */
     public function errorMessage() {
         //error message
-        $errorMsg = 'Parameter: <b>' . $this->getMessage() . '</b> is not a valid, numeric values.';
-        return $errorMsg;
+        return 'Parameter: <b>' . $this->getMessage() . '</b> is not a valid, numeric values.';
 
     }
 }