[llvm-arc] Remove dead incorrect code.

The code I am ripping out was meant to look at the input argument, not the
return value so was incorrect. Luckily this code was actually dead since whether
or not we returned no capture or unknown, we bailed.

Since the code is already dead, just rip it out.

Author: gottesmm

lib/LLVMPasses/LLVMARCOpts.cpp

@@ -649,9 +649,12 @@ static DtorKind analyzeDestructor(Value *P) {
         break;
       }
 
-      // Okay, the function has some side effects, if it doesn't capture the
-      // object argument, at least that is something.
-      return DtorFn->doesNotCapture(0) ? DtorKind::NoEscape : DtorKind::Unknown;
+      // Okay, the function has some side effects.
+      //
+      // TODO: We could in the future return more accurate information by
+      // checking if the function is able to capture the deinit parameter. We do
+      // not do that today.
+      return DtorKind::Unknown;
     }
   }