remove 5 circ limit on circuit runner (Qiskit#55)

* remove 5 circ limit on circuit runner

* remove payload size from readme

README.md

@@ -176,29 +176,6 @@ provider.runtime.delete_job('JOB_ID')
 
 ## Limitations
 
-### Payload size
-
-Qiskit Runtime is still in beta mode, so there is a limit of 127KB on the size of the payload you can send 
-to a program. To check the size of your payload:
-
-```python
-import sys
-import json
-from qiskit.providers.ibmq.runtime import RuntimeEncoder
-
-# This is the input parameters to be passed to the program.
-program_inputs = {
-    'iterations': 3
-}
-
-serialized = json.dumps(program_inputs, cls=RuntimeEncoder)
-print(f"input payload size={sys.getsizeof(serialized)}")  # Size needs to be smaller than 130048
-```
-
-This roughly translates into a five circuit maximum per job.
-
-If your payload is too large, you'll get an error message `'exec user process caused "argument list too long"'`.
-
 ### API
 
 Qiskit Runtime is still in beta mode, and heavy modifications to both functionality and API 

docs/limitations.rst

@@ -31,12 +31,6 @@ Runtime limitations
    At present, uploading custom programs to the Qiskit Runtime is not supported.
    This will be relaxed in upcoming releases.
 
-- **Five circuit limit per circuit runner job**
-
-   The current Qiskit Runtime was designed for executing program scripts,   
-   and is not tailored to large batches of quantum circuits.  As such, there
-   is a size limitation that translates into roughly a five circuit maximum
-   per job.
 
 .. Hiding - Indices and tables
    :ref:`genindex`