fix warns

Author: medvednikov

cmd/v/v.v

@@ -63,7 +63,6 @@ const external_tools = [
 	'watch',
 	'where',
 ]
-const list_of_flags_that_allow_duplicates = ['cc', 'd', 'define', 'cf', 'cflags']
 const delegated_v2_exe_env = 'V_V2_EXE'
 
 @[unsafe]

vlib/v/gen/c/infix.v

@@ -165,7 +165,6 @@ fn (mut g Gen) infix_expr_eq_op(node ast.InfixExpr) {
 	right := g.unwrap(right_type)
 	mut has_defined_eq_operator := false
 	mut eq_operator_expects_ptr := false
-	mut eq_method := ast.Fn{}
 	if m := g.table.find_method(left.sym, '==') {
 		// For != on generic struct types, check if the == operator was defined on
 		// a generic parent (receiver type has generic flag or is a different type).
@@ -178,7 +177,6 @@ fn (mut g Gen) infix_expr_eq_op(node ast.InfixExpr) {
 		if !skip_for_generic_ne {
 			has_defined_eq_operator = true
 			eq_operator_expects_ptr = m.receiver_type.is_ptr()
-			eq_method = m
 		}
 	}
 	// TODO: investigate why the following is needed for vlib/v/tests/string_alias_test.v and vlib/v/tests/anon_fn_with_alias_args_test.v