Drop unnecessary handling for DeclareSimd

Author: mrkajetanp

flang/lib/Semantics/resolve-names.cpp

@@ -1513,12 +1513,8 @@ class OmpVisitor : public virtual DeclarationVisitor {
 
   bool Pre(const parser::OpenMPDeclareSimdConstruct &x) {
     AddOmpSourceRange(x.source);
-    SkipImplicitTyping(true);
     return true;
   }
-  void Post(const parser::OpenMPDeclareSimdConstruct &x) {
-    SkipImplicitTyping(false);
-  }
 
   bool Pre(const parser::OmpInitializerProc &x) {
     auto &procDes = std::get<parser::ProcedureDesignator>(x.t);