Remove code for unimplemented goto-into-asm check.

The check was never fully implemented. We need to look into
this again, as currently we fail with a fairly unintellegible
LLVM ICE (added as GitHub #).

dmd2/statement.c

@@ -5509,9 +5509,6 @@ LabelStatement::LabelStatement(Loc loc, Identifier *ident, Statement *statement)
 #endif
     this->lblock = NULL;
     this->fwdrefs = NULL;
-#if IN_LLVM
-    this->asmLabel = false;
-#endif
 }
 
 Statement *LabelStatement::syntaxCopy()

dmd2/statement.h

@@ -943,7 +943,6 @@ struct LabelStatement : Statement
     void toIR(IRState *irs);
 
 #if IN_LLVM
-    bool asmLabel;       // for labels inside inline assembler
     void toNakedIR(IRState *irs);
 #endif
 };

gen/llvmhelpers.cpp

@@ -232,12 +232,6 @@ void DtoGoto(Loc loc, Identifier* target, TryFinallyStatement* sourceFinally)
         fatal();
     }
 
-    // if the target label is inside inline asm, error
-    if(lblstmt->asmLabel) {
-        error(loc, "cannot goto to label %s inside an inline asm block", target->toChars());
-        fatal();
-    }
-
     // find target basic block
     std::string labelname = gIR->func()->gen->getScopedLabelName(target->toChars());
     llvm::BasicBlock*& targetBB = gIR->func()->gen->labelToBB[labelname];