[Test] Remove redundant document

diff --git a/test/functional/cases/120_fuzzy/TCP_TESTS_README.md b/test/functional/cases/120_fuzzy/TCP_TESTS_README.md
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-# TCP Fuzzy Check Tests
-
-This directory contains functional tests for TCP support in fuzzy_check plugin.
-
-## Test Files
-
-- **tcp.robot** - Basic TCP tests with auto-switch mode (tcp = "auto")
-  - Tests TCP connection with rate-based switching
-  - Threshold set to 5 requests/second
-
-- **tcp-explicit.robot** - Explicit TCP mode tests (tcp = "yes")
-  - Forces TCP usage for all fuzzy check operations
-
-- **tcp-encrypted.robot** - Encrypted TCP tests
-  - Tests TCP with encryption enabled on both client and server
-
-## Running Tests
-
-### Run all TCP tests:
-```bash
-cd /Users/vstakhov/rspamd
-robot -v RSPAMD_INSTALLROOT:/path/to/install \
-      -v RSPAMD_TESTDIR:/Users/vstakhov/rspamd/test/functional \
-      test/functional/cases/120_fuzzy/tcp*.robot
-```
-
-### Run specific TCP test:
-```bash
-robot -v RSPAMD_INSTALLROOT:/path/to/install \
-      -v RSPAMD_TESTDIR:/Users/vstakhov/rspamd/test/functional \
-      test/functional/cases/120_fuzzy/tcp.robot
-```
-
-### Run with verbose output:
-```bash
-robot -v RSPAMD_INSTALLROOT:/path/to/install \
-      -v RSPAMD_TESTDIR:/Users/vstakhov/rspamd/test/functional \
-      -L DEBUG \
-      test/functional/cases/120_fuzzy/tcp.robot
-```
-
-## Test Configuration
-
-TCP tests use the following configuration:
-
-### Auto mode (tcp.robot):
-- `tcp = "auto"` - Enable automatic TCP switching
-- `tcp_threshold = 5` - Switch to TCP after 5 requests/second
-
-### Explicit mode (tcp-explicit.robot):
-- `tcp = "yes"` - Always use TCP
-- Server: `tcp = true` - Enable TCP on fuzzy worker
-
-### Encrypted mode (tcp-encrypted.robot):
-- `tcp = "auto"` with `tcp_threshold = 5`
-- `encrypted_only = true` - Require encryption
-- Shared keypair between client and server
-
-## What is Tested
-
-1. **Basic Operations**:
-   - Add fuzzy hashes via TCP
-   - Delete fuzzy hashes via TCP
-   - Overwrite fuzzy hashes via TCP
-
-2. **High Rate Scenario**:
-   - Send multiple messages to exceed rate threshold
-   - Verify automatic TCP switch
-   - Verify fuzzy check continues to work
-
-3. **Error Handling**:
-   - Connection failures
-   - Timeouts
-   - Protocol errors
-
-## Expected Results
-
-All tests should pass, verifying:
-- TCP connections are established correctly
-- Fuzzy add/delete/overwrite operations work via TCP
-- Auto-switch activates at rate threshold
-- Encryption works with TCP
-- UDP fallback works when TCP unavailable