Removed leftover raise statements (whoops)

src/backend/serializer.nim

@@ -297,7 +297,6 @@ proc loadBytes*(self: Serializer, stream: seq[byte]): Serialized =
         stream = stream[self.readConstants(stream)..^1]
         stream = stream[self.readCode(stream)..^1]
     except IndexDefect:
-        raise
         self.error("truncated bytecode file")
     except AssertionDefect:
         self.error("corrupted bytecode file")

src/main.nim

@@ -123,7 +123,6 @@ proc main() =
                     stdout.write(", ")
             stdout.write("]\n")
         except:
-            raise
             echo &"A Nim runtime exception occurred: {getCurrentExceptionMsg()}"