fix: remove revert-middle challenge

01-essentials/06-revert/setup.ps1

@@ -4,10 +4,9 @@
     Sets up the Module 06 challenge environment for learning git revert.
 
 .DESCRIPTION
-    This script creates a challenge directory with three branches demonstrating
+    This script creates a challenge directory with two branches demonstrating
     different revert scenarios:
-    - regular-revert: Basic revert of a single bad commit at the end
-    - middle-revert: Reverting a bad commit in the middle of history
+    - regular-revert: Basic revert of a single bad commit
     - multi-revert: Reverting multiple commits at once
 #>
 
@@ -104,68 +103,9 @@ git commit -m "Add modulo function" | Out-Null
 Write-Host "[CREATED] regular-revert branch with bad divide commit" -ForegroundColor Green
 
 # ============================================================================
-# SCENARIO 2: Revert in Middle of History
+# SCENARIO 2: Multi Revert (Multiple Bad Commits)
 # ============================================================================
-Write-Host "`nScenario 2: Creating middle-revert scenario..." -ForegroundColor Cyan
-
-# Switch back to main
-git switch $mainBranch | Out-Null
-
-# Create middle-revert branch
-git switch -c middle-revert | Out-Null
-
-# Good commit: Add validation module
-$validationContent = @"
-# validation.py - Input validation
-
-def validate_number(value):
-    """Check if value is a valid number."""
-    try:
-        float(value)
-        return True
-    except ValueError:
-        return False
-"@
-Set-Content -Path "validation.py" -Value $validationContent
-git add .
-git commit -m "Add input validation module" | Out-Null
-
-# BAD commit: Add broken formatter
-$formatterContent = @"
-# formatter.py - Output formatting
-
-def format_result(result):
-    """BROKEN: Doesn't handle None or errors properly!"""
-    return f"Result: {result.upper()}"  # This crashes if result is not a string!
-"@
-Set-Content -Path "formatter.py" -Value $formatterContent
-git add .
-git commit -m "Add broken formatter - needs to be reverted!" | Out-Null
-
-# Good commit: Add configuration (depends on validation, not formatter)
-$configContent = @"
-# config.py - Application configuration
-
-from validation import validate_number
-
-DEFAULT_PRECISION = 2
-
-def set_precision(value):
-    """Set calculation precision."""
-    if validate_number(value):
-        return int(value)
-    return DEFAULT_PRECISION
-"@
-Set-Content -Path "config.py" -Value $configContent
-git add .
-git commit -m "Add configuration module" | Out-Null
-
-Write-Host "[CREATED] middle-revert branch with bad commit in the middle" -ForegroundColor Green
-
-# ============================================================================
-# SCENARIO 3: Multi Revert (Multiple Bad Commits)
-# ============================================================================
-Write-Host "`nScenario 3: Creating multi-revert branch..." -ForegroundColor Cyan
+Write-Host "`nScenario 2: Creating multi-revert branch..." -ForegroundColor Cyan
 
 # Switch back to main
 git switch $mainBranch | Out-Null
@@ -247,10 +187,9 @@ git switch regular-revert | Out-Null
 Set-Location ..
 
 Write-Host "`n=== Setup Complete! ===" -ForegroundColor Green
-Write-Host "`nThree revert scenarios have been created:" -ForegroundColor Cyan
-Write-Host "  1. regular-revert   - Revert a bad commit at the end" -ForegroundColor White
-Write-Host "  2. middle-revert    - Revert a bad commit in the middle of history" -ForegroundColor White
-Write-Host "  3. multi-revert     - Revert multiple bad commits" -ForegroundColor White
+Write-Host "`nTwo revert scenarios have been created:" -ForegroundColor Cyan
+Write-Host "  1. regular-revert   - Revert a single bad commit" -ForegroundColor White
+Write-Host "  2. multi-revert     - Revert multiple bad commits" -ForegroundColor White
 Write-Host "`nYou are currently on the 'regular-revert' branch." -ForegroundColor Cyan
 Write-Host "`nNext steps:" -ForegroundColor Cyan
 Write-Host "  1. cd challenge" -ForegroundColor White