Remove deprecated SystemAPI

src/main/python/ddadevops/infrastructure/release_mixin/infrastructure_api.py

@@ -181,40 +181,6 @@ class ClojureFileHandler(FileHandler):
             clj_file.truncate()
 
 
-class SystemApi():
-
-    def __init__(self):
-        self.stdout = [""]
-        self.stderr = [""]
-        self.exitcode = 0
-
-    def run(self, args: list[str]): #TODO Make stateless 
-        sanitized_args = []
-        for arg in args:
-            str_arg = str(arg)
-            if str_arg is not "":
-                sanitized_args.append(str_arg.replace("\n", ""))
-        stream = sub.Popen(sanitized_args,
-                           stdout=sub.PIPE,
-                           stderr=sub.PIPE,
-                           text=True,
-                           encoding="UTF-8")
-        if stream.stdout is not None:
-            self.stdout = stream.stdout.readlines()
-        else:
-            self.stdout = None
-        if stream.stderr is not None:
-            self.stderr = stream.stderr.readlines()
-        else:
-            self.stderr = None
-
-    def run_checked(self, *args):
-        self.run(args)
-
-        if len(self.stderr) > 0:
-            raise Exception(f"Command failed with: {self.stderr}")
-
-
 class GitApi():
 
     def __init__(self):