Remove `"` from the search pattern `"tosa.*"`

The double quotation mark is not always appear in the assembly output
of operations. Remove it to easier capture general printing pattern.

Change-Id: I59301daa07abd905de7259f8ae527a74b1ce5a6c
Signed-off-by: TatWai Chong <tatwai.chong@arm.com>
diff --git a/thirdparty/serialization_lib b/thirdparty/serialization_lib
index e2b20e4..5f92021 160000
--- a/thirdparty/serialization_lib
+++ b/thirdparty/serialization_lib
@@ -1 +1 @@
-Subproject commit e2b20e4eb9e91d9fd4a155880f3bf6085b8ffaac
+Subproject commit 5f920211ac23393a7b98a0d358bfbfc3232d5c8f
diff --git a/verif/frameworks/tosa_verif_framework_compiler_runner.py b/verif/frameworks/tosa_verif_framework_compiler_runner.py
index 848b1b4..972ea0a 100755
--- a/verif/frameworks/tosa_verif_framework_compiler_runner.py
+++ b/verif/frameworks/tosa_verif_framework_compiler_runner.py
@@ -510,7 +510,8 @@
     empty_graph = True
     with open(tosa_mlir_filename, "r") as f:
         for line in f:
-            if re.search('"tosa.*"', line):
+            # TOSA assembly instructions all start with `tosa.`
+            if re.search(r"tosa\.", line):
                 empty_graph = False
 
                 break