Removed 'return' from samples (with void main)

targettest/sym1/symDisplay.c

@@ -355,6 +355,4 @@ void main (void) {
    }
 
    puts( "\n\nEnjoy your day!\n\n" );
-
-   return;
 }

targettest/sym1/symHello.c

@@ -34,6 +34,4 @@ void main(void) {
       for( d = 0; d < 10 ; d++ ) {
       }
    }
-
-   return;
 }

targettest/sym1/symIO.c

@@ -165,6 +165,4 @@ void main(void) {
          }
       }
    }
-
-   return;
 }

targettest/sym1/symNotepad.c

@@ -193,7 +193,5 @@ void main(void) {
    free( buffer );
 
    puts( "\nEnjoy your day!\n" );
-
-   return;
 }
 

targettest/sym1/symTiny.c

@@ -37,6 +37,4 @@ void main(void) {
       for( d = 0; d < 10 ; d++ ) {
       }
    }
-
-   return;
 }