python: Fix multiline quotes in a single line

An example case,
```python
mem_side_port = RequestPort(
    "This port sends requests and " "receives responses"
)
```

This is the residue of running the python formatter.
This is done by finding all tokens matching the regex `"\s"(?![.;"])`
and manually replacing them by empty strings.

Change-Id: Icf223bbe889e5fa5749a81ef77aa6e721f38b549
Signed-off-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/66111
Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>

src/python/gem5/components/memory/dramsim_3.py

@@ -53,7 +53,7 @@ def config_ds3(mem_type: str, num_chnls: int) -> Tuple[str, str]:
         )
     elif os.path.isfile(input_file):
         raise Exception(
-            "The configuration file '" + input_file + "' cannot " " be found."
+            "The configuration file '" + input_file + "' cannot  be found."
         )
 
     output_file = "/tmp/" + mem_type + "_chnls" + str(num_chnls) + ".ini"

src/python/m5/SimObject.py

@@ -478,7 +478,7 @@ def cxxMethod(*args, **kwargs):
         args, varargs, keywords, defaults = inspect.getargspec(func)
         if varargs or keywords:
             raise ValueError(
-                "Wrapped methods must not contain variable " "arguments"
+                "Wrapped methods must not contain variable arguments"
             )
 
         # Create tuples of (argument, default)
@@ -571,7 +571,7 @@ class SimObjectCliWrapper(object):
                     setattr(sim_object, key, val)
                 else:
                     raise SimObjectCliWrapperException(
-                        "tried to set or unsettable" "object parameter: " + key
+                        "tried to set or unsettableobject parameter: " + key
                     )
             else:
                 raise SimObjectCliWrapperException(

src/python/m5/params.py

@@ -1457,7 +1457,7 @@ class MetaEnum(MetaParamValue):
                 cls.map[val] = idx
         else:
             raise TypeError(
-                "Enum-derived class must define " "attribute 'map' or 'vals'"
+                "Enum-derived class must define attribute 'map' or 'vals'"
             )
 
         if cls.is_class: