Revert "Fix ReadSymbols in a Module that is already created (jbevain#686)"

This reverts commit 191f9fc.

Author: marek-safar

Mono.Cecil/AssemblyReader.cs

@@ -419,7 +419,7 @@ void ReadMethodsSymbols (TypeDefinition type, ISymbolReader symbol_reader)
 			for (int i = 0; i < methods.Count; i++) {
 				var method = methods [i];
 
-				if (method.HasBody && method.token.RID != 0 && (method.debug_info == null || !method.debug_info.HasSequencePoints))
+				if (method.HasBody && method.token.RID != 0 && method.debug_info == null)
 					method.debug_info = symbol_reader.Read (method);
 			}
 		}

Test/Mono.Cecil.Tests/PortablePdbTests.cs

@@ -748,27 +748,5 @@ public void DoubleWriteAndReadAgainModuleWithDeterministicMvid ()
 			Assert.AreNotEqual (mvid1_in, mvid2_in);
 			Assert.AreNotEqual (mvid1_out, mvid2_out);
 		}
-
-		[Test]
-		public void LoadPdbOnDemand ()
-		{
-			var assembly = File.ReadAllBytes (GetAssemblyResourcePath ("Microsoft.AspNetCore.Components.dll"));
-			var pdb = File.ReadAllBytes (GetAssemblyResourcePath ("Microsoft.AspNetCore.Components.pdb"));
-
-			var module = ModuleDefinition.ReadModule (new MemoryStream (assembly), new ReaderParameters (ReadingMode.Immediate));
-
-			var type = module.GetType ("Microsoft.AspNetCore.Components.Rendering.ComponentState");
-			var main = type.GetMethod ("RenderIntoBatch");
-			var debug_info = main.DebugInformation;
-
-			var pdbReaderProvider = new PdbReaderProvider ();
-			var symbolReader = pdbReaderProvider.GetSymbolReader (module,  new MemoryStream (pdb));
-			module.ReadSymbols (symbolReader);
-			type = module.GetType ("Microsoft.AspNetCore.Components.Rendering.ComponentState");
-			main = type.GetMethod ("RenderIntoBatch");
-			debug_info = main.DebugInformation;
-			Assert.AreEqual (9, debug_info.SequencePoints.Count);
-		}
-
 	}
 }