patch 8.2.2114: Vim9: unreachable code in assignment

Problem:    Vim9: unreachable code in assignment.
Solution:   Remove impossible condition and code.

Author: brammool

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2114,
 /**/
     2113,
 /**/

src/vim9compile.c

@@ -5483,16 +5483,6 @@ compile_assignment(char_u *arg, exarg_T *eap, cmdidx_T cmdidx, cctx_T *cctx)
 			    }
 			}
 		    }
-		    else if (name[1] == ':' && name[2] != NUL)
-		    {
-			semsg(_(e_cannot_use_namespaced_variable), name);
-			goto theend;
-		    }
-		    else if (!is_decl)
-		    {
-			semsg(_(e_unknown_variable_str), name);
-			goto theend;
-		    }
 		    else if (check_defined(var_start, varlen, cctx) == FAIL)
 			goto theend;
 		}