Reapply "fix: remove duplicate thinking block extraction as payload[4] already contains full formatted reasoning"

This reverts commit a0ba317cecd94d16e90286777b8edb1c9250950c.

gemini_web2api.py

@@ -579,7 +579,6 @@ def extract_response_text(raw: str) -> str:
     frames = _scan_complete_wrb_frames(raw)
 
     texts = []
-    think_texts = []
     for elem in frames:
         try:
             if not isinstance(elem, list) or len(elem) < 3 or elem[0] != "wrb.fr":
@@ -589,25 +588,6 @@ def extract_response_text(raw: str) -> str:
                 continue
             payload = json.loads(rp)
             
-            # Extract thinking block (if any)
-            if isinstance(payload, list) and len(payload) > 26 and payload[26]:
-                current_think = []
-                def _extract_think(data):
-                    if isinstance(data, str) and len(data) > 0 and data not in ("python", "text"):
-                        current_think.append(data.strip())
-                    elif isinstance(data, list):
-                        for item in data:
-                            _extract_think(item)
-                    elif isinstance(data, dict):
-                        for k, v in data.items():
-                            if isinstance(v, (list, dict, str)):
-                                _extract_think(v)
-                _extract_think(payload[26])
-                if current_think:
-                    # filter out empty strings and join
-                    filtered_think = [t for t in current_think if t]
-                    think_texts.append("\n\n".join(filtered_think))
-            
             # Extract final text
             if isinstance(payload, list) and len(payload) > 4 and payload[4]:
                 for part in payload[4]:
@@ -626,17 +606,7 @@ def extract_response_text(raw: str) -> str:
             text = t
             break
             
-    # Take the last non-empty thinking text
-    think_text = ""
-    for t in reversed(think_texts):
-        if t.strip():
-            think_text = t
-            break
-            
     final_response = clean_gemini_text(text)
-    if think_text:
-        final_response = f"<think>\n{think_text}\n</think>\n\n{final_response}"
-        
     return final_response